{"id":561,"date":"2025-07-03T02:03:31","date_gmt":"2025-07-03T02:03:31","guid":{"rendered":"https:\/\/www.coefficientfriction.com\/?p=561"},"modified":"2025-07-04T01:20:17","modified_gmt":"2025-07-04T01:20:17","slug":"astm-d4918-static-friction-test","status":"publish","type":"post","link":"https:\/\/www.coefficientfriction.com\/ja\/astm-d4918-static-friction-test","title":{"rendered":"ASTM D4918\u306b\u57fa\u3065\u304f\u9759\u6469\u64e6\u8a66\u9a13\u30ac\u30a4\u30c9"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"561\" class=\"elementor elementor-561\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bd29f83 e-flex e-con-boxed e-con e-parent\" data-id=\"bd29f83\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1b206fa elementor-widget elementor-widget-heading\" data-id=\"1b206fa\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">\u9759\u6469\u64e6\u8a66\u9a13\u304a\u3088\u3073ASTM D4918<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4d9c25a e-flex e-con-boxed e-con e-parent\" data-id=\"4d9c25a\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-00bf54d elementor-widget__width-inherit elementor-widget elementor-widget-text-editor\" data-id=\"00bf54d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"351\" data-end=\"855\">\u3092\u7406\u89e3\u3059\u308b <strong data-start=\"369\" data-end=\"393\">\u9759\u6469\u64e6\u8a66\u9a13<\/strong> \u306f\u3001\u54c1\u8cea\u7ba1\u7406\u3001\u5305\u88c5\u3001\u88fd\u7d19\u691c\u67fb\u3001\u304a\u3088\u3073\u95a2\u9023\u7523\u696d\u306b\u643a\u308f\u308b\u5c02\u9580\u5bb6\u306b\u3068\u3063\u3066\u6975\u3081\u3066\u91cd\u8981\u3067\u3042\u308b\u3002\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3042\u308b\u3002 <strong data-start=\"515\" data-end=\"529\">ASTM D4918<\/strong>\u3053\u306e\u65b9\u6cd5\u306f\u3001\u50be\u659c\u9762\u3092\u7528\u3044\u3066\u7d19\u53ca\u3073\u677f\u7d19\u6750\u6599\u306e\u9759\u6469\u64e6\u4fc2\u6570\u3092\u6e2c\u5b9a\u3059\u308b\u65b9\u6cd5\u3092\u898f\u5b9a\u3059\u308b\u3002\u3053\u306e\u8a66\u9a13\u306f\u3001\u677f\u7d19\u3084\u7bb1\u306e\u8868\u9762\u9593\u306e\u6ed1\u308a\u62b5\u6297\u304c\u7a4d\u307f\u91cd\u306d\u3001\u8f38\u9001\u3001\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306e\u52b9\u7387\u306b\u5927\u304d\u304f\u5f71\u97ff\u3059\u308b\u5305\u88c5\u7528\u9014\u306b\u7279\u306b\u95a2\u9023\u3059\u308b\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fb1009b e-flex e-con-boxed e-con e-parent\" data-id=\"fb1009b\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-53cd760 elementor-widget elementor-widget-heading\" data-id=\"53cd760\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u5305\u88c5\u7528\u9014\u306b\u304a\u3051\u308b\u9759\u6469\u64e6\u8a66\u9a13\u306e\u91cd\u8981\u6027<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ce48346 e-flex e-con-boxed e-con e-parent\" data-id=\"ce48346\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ff77a67 elementor-widget elementor-widget-text-editor\" data-id=\"ff77a67\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"930\" data-end=\"1306\">\u7d19\u306e\u8868\u9762\u9593\u306e\u6469\u64e6\u6319\u52d5\u306f\u3001\u81ea\u52d5\u68b1\u5305\u306b\u304a\u3051\u308b\u6750\u6599\u306e\u6027\u80fd\u3001\u51fa\u8377\u306e\u5b89\u5b9a\u6027\u3001\u7a4d\u307f\u91cd\u306d\u306e\u5b89\u5168\u6027\u306b\u5f71\u97ff\u3059\u308b\u3002\u305d\u306e\u305f\u3081 <strong data-start=\"1067\" data-end=\"1107\">\u9759\u6469\u64e6\u4fc2\u6570\uff08COF\uff09<\/strong> \u3068\u306f\u30012\u3064\u306e\u8868\u9762\u9593\u306e\u6ed1\u8d70\u3092\u958b\u59cb\u3059\u308b\u306e\u306b\u5fc5\u8981\u306a\u529b\u306e\u3053\u3068\u3067\u3001\u7d99\u7d9a\u7684\u306a\u904b\u52d5\u306b\u95a2\u4fc2\u3059\u308b\u904b\u52d5COF\u3068\u306f\u5bfe\u7167\u7684\u3067\u3042\u308b\u3002\u904b\u52d5COF\u3068\u306f\u5bfe\u7167\u7684\u3067\u3042\u308b\u3002 <strong data-start=\"1244\" data-end=\"1268\">\u9759\u6469\u64e6\u8a66\u9a13<\/strong> \u306b\u7126\u70b9\u3092\u5f53\u3066\u3066\u3044\u308b\u3002 <em data-start=\"1285\" data-end=\"1305\">\u521d\u671f\u62b5\u6297<\/em>.<\/p><p data-start=\"1308\" data-end=\"1639\"><strong data-start=\"1308\" data-end=\"1322\">ASTM D4918<\/strong> \u306f\u4e3b\u306b\u4ee5\u4e0b\u306e\u305f\u3081\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u308b\u3002 <strong data-start=\"1349\" data-end=\"1389\">\u975e\u30b3\u30fc\u30c8\u7d19<\/strong>\u3057\u304b\u3057\u3001\u6bb5\u30dc\u30fc\u30eb\u3084\u30bd\u30ea\u30c3\u30c9\u30d5\u30a1\u30a4\u30d0\u30fc\u30dc\u30fc\u30c9\u306e\u3088\u3046\u306a\u4ed6\u306e\u30b0\u30ec\u30fc\u30c9\u306b\u3082\u3001\u305d\u306e\u30e6\u30cb\u30fc\u30af\u306a\u7279\u6027\u306b\u5408\u308f\u305b\u3066\u9069\u5207\u306b\u8abf\u6574\u3059\u308c\u3070\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u7279\u306b\u3001\u88fd\u54c1\u5145\u586b\u524d\u306b\u5305\u88c5\u8cc7\u6750\u306e\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u6027\u80fd\u3092\u5224\u5b9a\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f20f20f e-flex e-con-boxed e-con e-parent\" data-id=\"f20f20f\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e776f66 elementor-widget elementor-widget-heading\" data-id=\"e776f66\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u30ab\u30fc\u30c8\u30f3COF\u8a66\u9a13\u3068\u7bb1\u6750\u6599\u306e\u6469\u64e6\u4fc2\u6570<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7345d2d e-flex e-con-boxed e-con e-parent\" data-id=\"7345d2d\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b08d779 elementor-widget elementor-widget-text-editor\" data-id=\"b08d779\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"1711\" data-end=\"2069\">\u5305\u88c5\u5206\u91ce\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3053\u3068\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3042\u308b\u3002 <strong data-start=\"1754\" data-end=\"1773\">\u30ab\u30fc\u30c8\u30f3COF\u30c6\u30b9\u30c8<\/strong> \u304c\u91cd\u8981\u3067\u3042\u308b\u3002\u3053\u306e\u8a66\u9a13\u306f\u3001\u7bb1\u306e\u8868\u9762\u9593\u306b\u3069\u308c\u3060\u3051\u306e\u6469\u64e6\u304c\u3042\u308b\u304b\u3092\u8a55\u4fa1\u3059\u308b\u3082\u306e\u3067\u3001\u7a4d\u307f\u91cd\u306d\u3084\u3059\u3055\u3084\u30d1\u30ec\u30c3\u30c8\u306e\u5b89\u5b9a\u6027\u306b\u76f4\u63a5\u5f71\u97ff\u3059\u308b\u3002\u9ad8\u3044 <strong data-start=\"1920\" data-end=\"1954\">\u7bb1\u306e\u6469\u64e6\u4fc2\u6570<\/strong> \u7d20\u6750\u306f\u3001\u8f38\u9001\u4e2d\u306b\u7bb1\u304c\u6ed1\u3089\u306a\u3044\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u3001\u4f4e\u3044COF\u306f\u3001\u81ea\u52d5\u68b1\u5305\u4e2d\u306b\u7c21\u5358\u306b\u30ea\u30ea\u30fc\u30b9\u3059\u308b\u3053\u3068\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002<\/p><p data-start=\"2071\" data-end=\"2379\">\u4f7f\u7528 <a href=\"https:\/\/store.astm.org\/d4918-97r07.html\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"2077\" data-end=\"2091\">ASTM D4918<\/strong><\/a>\u50be\u659c\u9762\u6cd5\u3067\u306f\u5b9f\u74b0\u5883\u3092\u30b7\u30df\u30e5\u30ec\u30fc\u30c8\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u305f\u3081\u3001\u30e1\u30fc\u30ab\u30fc\u306f\u7d19\u30d9\u30fc\u30b9\u306e\u7d20\u6750\u3084\u30dc\u30c3\u30af\u30b9\u7d20\u6750\u304c\u5341\u5206\u306a\u6469\u64e6\u62b5\u6297\u3092\u6301\u3064\u304b\u3069\u3046\u304b\u3092\u691c\u51fa\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u8a66\u9a13\u4e2d\u3001\u521d\u671f\u30b9\u30ea\u30c3\u30d7\u89d2\u304c\u8a18\u9332\u3055\u308c\u3001\u6469\u64e6\u62b5\u6297\u304c\u8a08\u7b97\u3055\u308c\u308b\u3002 <strong data-start=\"2332\" data-end=\"2346\">\u9759\u7684COF<\/strong> \u305d\u306e\u89d2\u5ea6\u306e\u30bf\u30f3\u30b8\u30a7\u30f3\u30c8\u3092\u4f7f\u3046\u3002<\/p><p data-start=\"2071\" data-end=\"2379\">\u7d19\u30ab\u30fc\u30c8\u30f3\u3092\u88fd\u9020\u307e\u305f\u306f\u4f7f\u7528\u3059\u308b\u4f01\u696d\u306b\u3068\u3063\u3066\u3001\u4fe1\u983c\u3067\u304d\u308bCOF\u5024\u306f\u3001\u696d\u52d9\u306e\u5b89\u5168\u6027\u3068\u898f\u5236\u9075\u5b88\u3092\u4fdd\u8a3c\u3059\u308b\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8aba3a6 e-flex e-con-boxed e-con e-parent\" data-id=\"8aba3a6\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6179b7e elementor-widget elementor-widget-heading\" data-id=\"6179b7e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">ASTM D4918\u3092\u7528\u3044\u305f\u9759\u6469\u64e6\u8a66\u9a13\u306e\u5b9f\u65bd\u65b9\u6cd5<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a7c17bb e-flex e-con-boxed e-con e-parent\" data-id=\"a7c17bb\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-98f3925 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"98f3925\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\u00a0<\/p><p>\u00a0<\/p><p>\u00a0<\/p><p>\u4ee5\u4e0b\u306f\u305d\u306e\u6982\u8981\u3067\u3042\u308b\u3002 <strong data-start=\"2605\" data-end=\"2629\">\u9759\u6469\u64e6\u8a66\u9a13<\/strong> ASTM D4918\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u5f93\u3046\uff1a<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e3e3781 elementor-widget elementor-widget-video\" data-id=\"e3e3781\" data-element_type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/www.youtube.com\\\/watch?v=WhCQu7dJkI8&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bbc87ee e-flex e-con-boxed e-con e-parent\" data-id=\"bbc87ee\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-03d6e88 elementor-widget elementor-widget-heading\" data-id=\"03d6e88\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1.\u8a66\u9a13\u88c5\u7f6e<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e2de683 e-flex e-con-boxed e-con e-parent\" data-id=\"e2de683\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a492111 elementor-widget elementor-widget-text-editor\" data-id=\"a492111\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\u3092\u5099\u3048\u305f\u6469\u64e6\u30c6\u30b9\u30bf\u30fc\u3092\u4f7f\u7528\u3059\u308b\u3002 <strong data-start=\"2728\" data-end=\"2756\">\u50be\u659c\u9762\u6a5f\u69cb<\/strong>\u306a\u3069\u304c\u3042\u308b\u3002 <strong data-start=\"2770\" data-end=\"2797\"><a href=\"https:\/\/www.coefficientfriction.com\/ja\/\">Cell Instruments<\/a> COF-03<\/strong>\u3053\u308c\u306fASTM D4918\u306e\u8981\u4ef6\u306b\u9069\u5408\u3057\u3066\u3044\u307e\u3059\u3002\u7d19\u3068\u5305\u88c5\u6750\u6599\u306e\u6b63\u78ba\u306aCOF\u5024\u3092\u63d0\u4f9b\u3059\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f8c46b2 e-flex e-con-boxed e-con e-parent\" data-id=\"f8c46b2\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-817c116 elementor-widget elementor-widget-heading\" data-id=\"817c116\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2.\u30b5\u30f3\u30d7\u30eb\u306e\u6e96\u5099<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ab92f9c e-flex e-con-boxed e-con e-parent\" data-id=\"ab92f9c\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4e8c8a9 elementor-widget elementor-widget-text-editor\" data-id=\"4e8c8a9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-start=\"2949\" data-end=\"2994\">\u30b5\u30f3\u30d7\u30eb\u30b7\u30fc\u30c8\u304b\u30892\u3064\u306e\u8a66\u9a13\u7247\u3092\u5207\u308a\u53d6\u308b\u3002<\/li><li data-start=\"2997\" data-end=\"3084\">\u4e21\u65b9\u306e\u30d4\u30fc\u30b9\u304c\u5e73\u3089\u3067\u3001\u6298\u308a\u76ee\u304c\u306a\u304f\u3001\u6a19\u6e96\u30b5\u30a4\u30ba\u306e\u8a31\u5bb9\u7bc4\u56f2\u5185\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/li><li data-start=\"3087\" data-end=\"3163\">\u6a19\u6e96\u5316\u3055\u308c\u305f\u96f0\u56f2\u6c17\uff08\u901a\u5e3823\u2103\u300150% RH\uff09\u3067\u30b5\u30f3\u30d7\u30eb\u3092\u8abf\u6574\u3059\u308b\u3002<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-63cf402 e-flex e-con-boxed e-con e-parent\" data-id=\"63cf402\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b8be051 elementor-widget elementor-widget-heading\" data-id=\"b8be051\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3.\u8a66\u9a13\u624b\u9806<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-117ac1f e-flex e-con-boxed e-con e-parent\" data-id=\"117ac1f\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8a7456d elementor-widget elementor-widget-text-editor\" data-id=\"8a7456d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-start=\"3193\" data-end=\"3276\">\u7247\u65b9\u306e\u8a66\u9a13\u7247\u3092\u50be\u659c\u9762\u306b\u7f6e\u304d\uff08\u56fa\u5b9a\uff09\u3001\u3082\u3046\u7247\u65b9\u3092\u4e0a\u306b\u7f6e\u304f\uff08\u53ef\u52d5\u30bd\u30ea\uff09\u3002<\/li><li data-start=\"3279\" data-end=\"3340\">\u4e00\u756a\u4e0a\u306e\u8a66\u6599\u304c\u6ed1\u308a\u59cb\u3081\u308b\u307e\u3067\u3001\u3086\u3063\u304f\u308a\u3068\u5e73\u9762\u3092\u50be\u3051\u308b\u3002<\/li><li data-start=\"3343\" data-end=\"3387\">\u52d5\u304d\u304c\u59cb\u307e\u308b\u89d2\u5ea6\u3092\u8a18\u9332\u3059\u308b\u3002<\/li><li data-start=\"3390\" data-end=\"3448\">\u306b\u3064\u3044\u3066 <strong data-start=\"3394\" data-end=\"3428\">\u9759\u6469\u64e6\u4fc2\u6570<\/strong> \u3068\u3057\u3066\u8a08\u7b97\u3055\u308c\u308b\uff1a<\/li><li><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\">\u03bcs=tan(\u03b8)\u33a4 \u33a4mu_s = \u33a4tan(\u03b8)<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">\u03bc<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\">s<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mop\">\u30bf\u30f3<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">\u03b8<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span><\/li><li data-start=\"3486\" data-end=\"3534\">\u3069\u3053 <span class=\"katex\"><span class=\"katex-mathml\">\u03b8theta<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">\u03b8<\/span><\/span><\/span><\/span> \u306f\u521d\u671f\u30b9\u30ea\u30c3\u30d7\u306e\u89d2\u5ea6\u3067\u3042\u308b\u3002<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-62ec983 e-flex e-con-boxed e-con e-parent\" data-id=\"62ec983\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9c5c413 elementor-widget elementor-widget-heading\" data-id=\"9c5c413\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4.\u7d50\u679c\u306e\u89e3\u91c8<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2c7d41a e-flex e-con-boxed e-con e-parent\" data-id=\"2c7d41a\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a138184 elementor-widget elementor-widget-text-editor\" data-id=\"a138184\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"3569\" data-end=\"3735\">\u88fd\u54c1\u306e\u6027\u80fd\u8981\u4ef6\u3068\u6e2c\u5b9a\u5024\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u7a4d\u5c64\u6642\u306e\u5b89\u5b9a\u6027\u306b\u306f\u9ad8\u3044COF\u304c\u671b\u307e\u3057\u304f\u3001\u81ea\u52d5\u5316\u30d7\u30ed\u30bb\u30b9\u306b\u306f\u4f4e\u3044COF\u304c\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-94536be e-flex e-con-boxed e-con e-parent\" data-id=\"94536be\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a095661 elementor-widget elementor-widget-heading\" data-id=\"a095661\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u30bb\u30eb\u30a4\u30f3\u30b9\u30c4\u30eb\u30e1\u30f3\u30c4COF-03\u30c6\u30b9\u30bf\u30fc\u3092\u9078\u3076\u7406\u7531<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5284a6c e-flex e-con-boxed e-con e-parent\" data-id=\"5284a6c\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f569e84 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"f569e84\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"3793\" data-end=\"3973\">\u6b63\u78ba\u306aCOF\u5206\u6790\u306e\u5b9f\u65bd\u3092\u691c\u8a0e\u3057\u3066\u3044\u308b\u30e9\u30dc\u3084\u5305\u88c5\u4f1a\u793e\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u88fd\u54c1\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002 <strong data-start=\"3895\" data-end=\"3959\">\u30bb\u30eb\u5f0f\u6469\u64e6\u4fc2\u6570\u8a08 \u30e2\u30c7\u30eb <a href=\"https:\/\/www.coefficientfriction.com\/ja\/inclined-plane-coefficient-of-friction-tester\/\">COF-03<\/a><\/strong>.\u3053\u306e\u88c5\u7f6e\uff1a<\/p><ul><li data-start=\"3977\" data-end=\"4024\">\u6e96\u62e0 <strong data-start=\"3991\" data-end=\"4005\">ASTM D4918<\/strong> \u304a\u3088\u3073ISO\u898f\u683c\u306b\u6e96\u62e0\u3057\u3066\u3044\u308b\u3002<\/li><li data-start=\"4027\" data-end=\"4081\">\u4e21\u65b9\u3092\u30b5\u30dd\u30fc\u30c8 <strong data-start=\"4041\" data-end=\"4067\">\u9759\u7684\u304a\u3088\u3073\u52d5\u529b\u5b66\u7684COF<\/strong> \u3092\u6e2c\u5b9a\u3059\u308b\u3002<\/li><li data-start=\"4084\" data-end=\"4156\">\u9ad8\u5ea6\u306a\u30c7\u30b8\u30bf\u30eb\u5236\u5fa1\u3068\u30c7\u30fc\u30bf\u51fa\u529b\u3067\u9ad8\u3044\u518d\u73fe\u6027\u3092\u63d0\u4f9b\u3002<\/li><li data-start=\"4159\" data-end=\"4267\">\u3055\u307e\u3056\u307e\u306a\u7d19\u7a2e\u3084\u6bb5\u30dc\u30fc\u30eb\u7d20\u6750\u306e\u8a66\u9a13\u306b\u6700\u9069\u306a\u3001\u8010\u4e45\u6027\u306b\u512a\u308c\u305f\u50be\u659c\u9762\u6a5f\u69cb\u3092\u63a1\u7528\u3002<\/li><\/ul><p data-start=\"4269\" data-end=\"4424\">COF-03\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u5305\u88c5\u8a2d\u8a08\u306e\u6700\u9069\u5316\u3084\u7269\u6d41\u5b89\u5168\u57fa\u6e96\u306e\u9075\u5b88\u306b\u4e0d\u53ef\u6b20\u306a\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u6a19\u6e96\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ca5dd74 elementor-widget elementor-widget-image\" data-id=\"ca5dd74\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"750\" height=\"750\" src=\"https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/07\/COF-03-Inclined-Plane-Coefficient-of-Friction-Tester-5_\u526f\u672c.webp\" class=\"attachment-large size-large wp-image-566\" alt=\"ASTM D4918-\u9759\u6469\u64e6\u8a66\u9a13\" srcset=\"https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/07\/COF-03-Inclined-Plane-Coefficient-of-Friction-Tester-5_\u526f\u672c.webp 750w, https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/07\/COF-03-Inclined-Plane-Coefficient-of-Friction-Tester-5_\u526f\u672c-300x300.webp 300w, https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/07\/COF-03-Inclined-Plane-Coefficient-of-Friction-Tester-5_\u526f\u672c-150x150.webp 150w, https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/07\/COF-03-Inclined-Plane-Coefficient-of-Friction-Tester-5_\u526f\u672c-12x12.webp 12w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-389c3b7 e-flex e-con-boxed e-con e-parent\" data-id=\"389c3b7\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7c219f3 elementor-widget elementor-widget-heading\" data-id=\"7c219f3\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u30da\u30fc\u30d1\u30fc\u30c6\u30b9\u30c8\u4ee5\u5916\u306e\u7528\u9014<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b419682 e-flex e-con-boxed e-con e-parent\" data-id=\"b419682\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-81535ce elementor-widget elementor-widget-text-editor\" data-id=\"81535ce\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"4469\" data-end=\"4565\">\u306b\u3064\u3044\u3066 <strong data-start=\"4473\" data-end=\"4497\">\u9759\u6469\u64e6\u8a66\u9a13<\/strong> \u3053\u306e\u65b9\u6cd5\u306f\u3001\u7d19\u3068\u30ab\u30fc\u30c8\u30f3\u306e\u30c6\u30b9\u30c8\u306b\u3068\u3069\u307e\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u65b9\u6cd5\u306f\u6b21\u306e\u3088\u3046\u306a\u7528\u9014\u306b\u3082\u9069\u7528\u3067\u304d\u308b\uff1a<\/p><ul><li data-start=\"4568\" data-end=\"4599\"><strong data-start=\"4568\" data-end=\"4599\">\u7e4a\u7dad\u4e2d\u9593\u5c64\u306e\u6319\u52d5<\/strong><\/li><li data-start=\"4602\" data-end=\"4635\"><strong data-start=\"4602\" data-end=\"4635\">\u30e9\u30df\u30cd\u30fc\u30c8\u5305\u88c5\u6750<\/strong><\/li><li data-start=\"4638\" data-end=\"4694\"><strong data-start=\"4638\" data-end=\"4694\">\u98f2\u6599\u30ad\u30e3\u30ea\u30a2\u306b\u304a\u3051\u308b\u677f\u7d19\u306e\u30b9\u30ea\u30c3\u30d7\u7279\u6027<\/strong><\/li><li data-start=\"4697\" data-end=\"4742\"><strong data-start=\"4697\" data-end=\"4742\">\u533b\u85ac\u54c1\u30d6\u30ea\u30b9\u30bf\u30fc\u5305\u88c5\u6469\u64e6<\/strong><\/li><\/ul><p data-start=\"4744\" data-end=\"4888\">\u3053\u308c\u3089\u306e\u6d1e\u5bdf\u306f\u3001\u88fd\u54c1\u306e\u640d\u50b7\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3001\u6a5f\u68b0\u306e\u4e92\u63db\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u3001\u3088\u308a\u5b89\u5168\u3067\u52b9\u7387\u7684\u306a\u5305\u88c5\u30b7\u30b9\u30c6\u30e0\u306e\u8a2d\u8a08\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8ae1d49 e-flex e-con-boxed e-con e-parent\" data-id=\"8ae1d49\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5aa1670 elementor-widget elementor-widget-heading\" data-id=\"5aa1670\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u6700\u7d42\u7684\u306a\u611f\u60f3<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-607e70d e-flex e-con-boxed e-con e-parent\" data-id=\"607e70d\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1874455 elementor-widget elementor-widget-text-editor\" data-id=\"1874455\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"4914\" data-end=\"5277\">\u9069\u5207\u306b\u5b9f\u884c\u3055\u308c\u308b <strong data-start=\"4934\" data-end=\"4958\">\u9759\u6469\u64e6\u8a66\u9a13<\/strong> ASTM D4918\u306b\u6e96\u62e0\u3059\u308b\u3053\u3068\u3067\u3001\u30d1\u30c3\u30b1\u30fc\u30b8\u30f3\u30b0\u30a8\u30f3\u30b8\u30cb\u30a2\u3001\u6750\u6599\u958b\u767a\u8005\u3001\u54c1\u8cea\u7ba1\u7406\u5c02\u9580\u5bb6\u306f\u3001\u7d19\u3084\u677f\u7d19\u3092\u30d9\u30fc\u30b9\u3068\u3057\u305f\u30d1\u30c3\u30b1\u30fc\u30b8\u30f3\u30b0\u304c\u5b9f\u969b\u306e\u4f7f\u7528\u6761\u4ef6\u4e0b\u3067\u671f\u5f85\u901a\u308a\u306e\u6027\u80fd\u3092\u767a\u63ee\u3059\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u51fa\u8377\u6642\u306e\u7bb1\u306e\u30ba\u30ec\u3092\u9632\u6b62\u3059\u308b\u306b\u3082\u3001\u81ea\u52d5\u5305\u88c5\u30e9\u30a4\u30f3\u3092\u6700\u9069\u5316\u3059\u308b\u306b\u3082\u3001COF\u8a66\u9a13\u306f\u91cd\u8981\u306a\u6d1e\u5bdf\u3092\u3082\u305f\u3089\u3057\u307e\u3059\u3002<\/p><p data-start=\"5279\" data-end=\"5550\">\u306e\u3088\u3046\u306a\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30c6\u30b9\u30c8\u6a5f\u5668\u306b\u6295\u8cc7\u3059\u308b\u3002 <strong data-start=\"5321\" data-end=\"5349\">\u30bb\u30eb\u30a4\u30f3\u30b9\u30c4\u30eb\u30e1\u30f3\u30c4\u306eCOF-03<\/strong> \u306f\u3001\u3055\u307e\u3056\u307e\u306a\u7d20\u6750\u306b\u308f\u305f\u3063\u3066\u4e00\u8cab\u3057\u305f\u6b63\u78ba\u306a\u7d50\u679c\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002\u54c1\u8cea\u57fa\u6e96\u3092\u6e80\u305f\u3057\u3001\u88fd\u54c1\u6027\u80fd\u306e\u5411\u4e0a\u3092\u76ee\u6307\u3059\u5305\u88c5\u306e\u5c02\u9580\u5bb6\u306b\u3068\u3063\u3066\u3001\u3053\u306e\u8a66\u9a13\u6cd5\u3092\u30de\u30b9\u30bf\u30fc\u3059\u308b\u3053\u3068\u306f\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d822f74 e-flex e-con-boxed e-con e-parent\" data-id=\"d822f74\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0d08481 elementor-widget elementor-widget-heading\" data-id=\"0d08481\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">\u3088\u304f\u3042\u308b\u3054\u8cea\u554f<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-db120a1 e-flex e-con-boxed e-con e-parent\" data-id=\"db120a1\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2e5d76a elementor-widget elementor-widget-text-editor\" data-id=\"2e5d76a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"5567\" data-end=\"5814\"><strong data-start=\"5567\" data-end=\"5644\">Q1: \u9759\u6469\u64e6\u8a66\u9a13\u3068\u52d5\u6469\u64e6\u8a66\u9a13\u306e\u4e3b\u306a\u9055\u3044\u306f\u4f55\u3067\u3059\u304b\uff1f<\/strong><br data-start=\"5644\" data-end=\"5647\" \/>A: \u9759\u6469\u64e6\u306f\u904b\u52d5\u3092\u958b\u59cb\u3059\u308b\u529b\u3092\u6e2c\u5b9a\u3057\u3001\u52d5\u6469\u64e6\u306f\u904b\u52d5\u3092\u7d99\u7d9a\u3059\u308b\u529b\u3092\u6e2c\u5b9a\u3057\u307e\u3059\u3002ASTM D4918\u306f\u9759\u6b62\u6469\u64e6\u306e\u307f\u306b\u7126\u70b9\u3092\u5f53\u3066\u3066\u3044\u307e\u3059\u3002<\/p><p data-start=\"5816\" data-end=\"6012\"><strong data-start=\"5816\" data-end=\"5864\">Q2: ASTM D4918\u306f\u30b3\u30fc\u30c8\u7d19\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u304b\uff1f<\/strong><br data-start=\"5864\" data-end=\"5867\" \/>A: \u4e3b\u306b\u975e\u5857\u5de5\u7d19\u7528\u306b\u958b\u767a\u3055\u308c\u307e\u3057\u305f\u304c\u3001\u7cbe\u5ea6\u304c\u843d\u3061\u308b\u3053\u3068\u3092\u7406\u89e3\u3057\u305f\u4e0a\u3067\u614e\u91cd\u306b\u30c6\u30b9\u30c8\u3059\u308c\u3070\u3001\u4ed6\u306e\u7d19\u306b\u3082\u9069\u7528\u3067\u304d\u307e\u3059\u3002<\/p><p data-start=\"6014\" data-end=\"6210\"><strong data-start=\"6014\" data-end=\"6079\">Q3: \u5305\u88c5\u6750\u306e\u9759\u7684 COF \u306e\u8a31\u5bb9\u7bc4\u56f2\u306f\uff1f<\/strong><br data-start=\"6079\" data-end=\"6082\" \/>A: \u8a31\u5bb9\u7bc4\u56f2\u306f\u696d\u754c\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u7bb1\u6750\u306f\u7a4d\u307f\u91cd\u306d\u306e\u5b89\u5b9a\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b0.4\u4ee5\u4e0a\u306eCOF\u304c\u5fc5\u8981\u306a\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Static Friction Test and ASTM D4918 Understanding the static friction test is crucial for professionals involved in quality control, packaging, paper testing, and related industries. According to ASTM D4918, this method defines how to determine the static coefficient of friction of paper and paperboard materials using an inclined plane. This test is particularly relevant for packaging applications, where sliding resistance between paperboard or box surfaces can significantly affect stacking, transport, and handling efficiency. Importance of Static Friction Testing in Packaging Applications Friction behavior between paper surfaces affects material performance in automated packing, shipping stability, and stacking safety. The static coefficient of friction (COF) refers to the force needed to initiate [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-561","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Static friction test based on ASTM D4918 - Coefficient of Friction Tester<\/title>\n<meta name=\"description\" content=\"Learn how to static friction test according to ASTM D4918. 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