{"id":233902,"date":"2024-10-19T15:15:16","date_gmt":"2024-10-19T15:15:16","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iec-61747-40-52018\/"},"modified":"2024-10-25T09:46:27","modified_gmt":"2024-10-25T09:46:27","slug":"bs-iec-61747-40-52018","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iec-61747-40-52018\/","title":{"rendered":"BS IEC 61747-40-5:2018"},"content":{"rendered":"

This part of IEC 61747 is a mechanical performance testing procedure for cover glass used in electronic displays in mobile devices. This document focuses on the measurement of surface impact energy required to fracture a specimen due to the collision of sharp particles onto the surface of a cover glass. This is achieved by dropping a ball on a sheet of coated abrasives placed on the cover glass, which is rigidly supported. The failure mode is associated with damage introduction via sharp contact. Crack propagation is enhanced by central tension in the case of strengthened glass. This failure mode represents one of several field failure modes observed in mobile devices.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
4<\/td>\nCONTENTS <\/td>\n<\/tr>\n
5<\/td>\nFOREWORD <\/td>\n<\/tr>\n
7<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
8<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
9<\/td>\n4 General <\/td>\n<\/tr>\n
10<\/td>\n5 Apparatus
5.1 Testing environment and pre-conditioning
5.2 Apparatus overview
5.3 Height adjustment beam
Figure 1 \u2013 Apparatus overview <\/td>\n<\/tr>\n
11<\/td>\n5.4 Base (granite)
5.5 Coated abrasives
5.6 Armature
5.7 Ball release mechanism
5.8 Height adjustment clamp
5.9 Ball release controller
5.10 Ball
5.11 Base <\/td>\n<\/tr>\n
12<\/td>\n6 Procedure
6.1 Safety
6.1.1 Hazard \u2013 Broken glass
6.1.2 Hazard \u2013 Compression due to moving ball
6.2 Sample
6.3 Individual specimen <\/td>\n<\/tr>\n
13<\/td>\n6.4 Complete the report
7 Calculations
7.1 Breaking energy
7.2 Statistical calculations <\/td>\n<\/tr>\n
14<\/td>\nFigure 2 \u2013 Typical Weibull plot <\/td>\n<\/tr>\n
15<\/td>\n8 Reporting
8.1 Information to be reported for each test
8.2 Information to be made available upon request
9 Specifications <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Liquid crystal display devices – Mechanical testing of display cover glass for mobile devices. Strength against dynamic impact by a sharp object with the specimen rigidly supported<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2018<\/td>\n16<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":233908,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-233902","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/233902","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/233908"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=233902"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=233902"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=233902"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}