{"id":307381,"date":"2024-10-19T21:04:45","date_gmt":"2024-10-19T21:04:45","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-79912001\/"},"modified":"2024-10-25T18:41:37","modified_gmt":"2024-10-25T18:41:37","slug":"bs-79912001","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-79912001\/","title":{"rendered":"BS 7991:2001"},"content":{"rendered":"<p>This standard specifies a method, based upon linear-elastic fracture-mechanics (LEFM), for the determination of the fracture resistance of structural adhesive joints under an applied mode I opening load using the double cantilever beam (DCB) and tapered double cantilever beam (TDCB) specimens.<\/p>\n<h4>PDF Catalog<\/h4>\n<table border=\"1px\" class=\"des-table\">\n<tr>\n<th>PDF Pages<\/th>\n<th>PDF Title<\/th>\n<\/tr>\n<tr>\n<td><b>1<b><\/td>\n<td>BRITISH STANDARD  <\/td>\n<\/tr>\n<tr>\n<td><b>2<b><\/td>\n<td>Committees responsible for this British Standard  <\/td>\n<\/tr>\n<tr>\n<td><b>3<b><\/td>\n<td>Contents  <\/td>\n<\/tr>\n<tr>\n<td><b>5<b><\/td>\n<td>Introduction  <\/td>\n<\/tr>\n<tr>\n<td><b>8<b><\/td>\n<td>1 Scope <br \/> 2 Normative references <br \/> 3 Symbols and abbreviated terms  <\/td>\n<\/tr>\n<tr>\n<td><b>9<b><\/td>\n<td>4 Principle <br \/> 5 Apparatus <br \/> 5.1 Tensile testing machine  <\/td>\n<\/tr>\n<tr>\n<td><b>10<b><\/td>\n<td>5.2 Travelling microscope or a video camera with a suitable magnification <br \/> 5.3 Micrometer or vernier calipers <br \/> 5.4 Micrometer or vernier calipers <br \/> 5.5 Typewriter correction fluid (\u201cwhite ink\u201d) or white spray-paint <br \/> 6 Specimens <br \/> 6.1 Number of specimens <br \/> 6.2 Conditioning <br \/> 6.3 Manufacture of adhesive joint specimens <br \/> 6.4 Measurement of specimen dimensions  <\/td>\n<\/tr>\n<tr>\n<td><b>11<b><\/td>\n<td>6.5 Preparation of specimens <br \/> 7 Procedure <br \/> 7.1 Test set-up and data recording <br \/> 7.2 Initial loading (the precracking stage)  <\/td>\n<\/tr>\n<tr>\n<td><b>12<b><\/td>\n<td>7.3 Re-loading: testing from the mode I precrack <br \/> 7.4 Measurement of the machine compliance <br \/> 8 Data analysis <br \/> 8.1 Determination of the raw data from the load\u2013displacement trace  <\/td>\n<\/tr>\n<tr>\n<td><b>13<b><\/td>\n<td>8.2 Determination of  <\/td>\n<\/tr>\n<tr>\n<td><b>15<b><\/td>\n<td>9 Test report <br \/> 9.1 General <br \/> 9.2 Test report for the DCB test  <\/td>\n<\/tr>\n<tr>\n<td><b>16<b><\/td>\n<td>9.3 Test report for the TDCB test  <\/td>\n<\/tr>\n<tr>\n<td><b>17<b><\/td>\n<td>Figure 1  <\/td>\n<\/tr>\n<tr>\n<td><b>18<b><\/td>\n<td>Figure 2  <\/td>\n<\/tr>\n<tr>\n<td><b>19<b><\/td>\n<td>Figure 3 <br \/> Figure 4  <\/td>\n<\/tr>\n<tr>\n<td><b>20<b><\/td>\n<td>Annex A (normative) <br \/> Measurement of testing system compliance  <\/td>\n<\/tr>\n<tr>\n<td><b>21<b><\/td>\n<td>Figure A.1 <br \/> Annex B (normative) <br \/> Procedure to follow when unstable or \u201cstick-slip\u201d crack growth is observed during the&#8230;  <\/td>\n<\/tr>\n<tr>\n<td><b>22<b><\/td>\n<td>Figure B.1 <br \/> Annex C (normative) <br \/> Procedure to detect the occurance of plastic deformation during a DCB or TDCB adhesiv&#8230;  <\/td>\n<\/tr>\n<tr>\n<td><b>23<b><\/td>\n<td>Figure C.1  <\/td>\n<\/tr>\n<tr>\n<td><b>24<b><\/td>\n<td>Annex D (normative) <br \/> Test report sheets <br \/> D.1 Test report sheet for DCB test  <\/td>\n<\/tr>\n<tr>\n<td><b>27<b><\/td>\n<td>D.2 Test report sheet for the TDCB test  <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p><b>Determination of the mode I adhesive fracture energy, G<sub>IC<\/sub>, of structural adhesives using the double cantilever beam (DCB) and tapered double cantilever beam (TDCB) specimens<\/b><\/p>\n<table class=\"shortdes-table\" style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/bsi\/\"><b>BSI<\/b><\/a><\/td>\n<td>2001<\/td>\n<td>32<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":307387,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-307381","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\/307381","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\/307387"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=307381"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=307381"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=307381"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}