{"id":1784,"date":"2020-03-23T08:16:59","date_gmt":"2020-03-23T08:16:59","guid":{"rendered":"https:\/\/seismicconsolidation.com\/?p=1784"},"modified":"2020-03-23T09:20:24","modified_gmt":"2020-03-23T09:20:24","slug":"to-carry-out-compression-test-on-wooden-cubes-when-load-is-applied-parallel-to-grains-perpendicular-to-grains","status":"publish","type":"post","link":"https:\/\/seismicconsolidation.com\/to-carry-out-compression-test-on-wooden-cubes-when-load-is-applied-parallel-to-grains-perpendicular-to-grains\/","title":{"rendered":"To carry out compression test on wooden cubes when load is applied, Parallel to grains, Perpendicular to grains"},"content":{"rendered":"<p><strong>Job # 4<\/strong><\/p>\n<p><strong>To carry out compression test on wooden cubes when load is applied <\/strong><\/p>\n<ul>\n<li><strong>Parallel to grains<\/strong><\/li>\n<li><strong>Perpendicular to the grains.<\/strong><\/li>\n<\/ul>\n<p><strong>Objective:<\/strong><\/p>\n<ul>\n<li>To determine compressive strength of wood<\/li>\n<li>To determine modulus of elasticity \u20ac and modulus of stiffness (K)<\/li>\n<li>To observe an-isotropic behavior of wood.<\/li>\n<\/ul>\n<p><strong>Apparatus:<\/strong><\/p>\n<ol>\n<li>Wooden samples<\/li>\n<li>Vernier calipers<\/li>\n<li>Deflection gauge<\/li>\n<li>Shimadzu 500kN UTM<\/li>\n<\/ol>\n<p><strong>Related theory:<\/strong><\/p>\n<ul>\n<li><strong>Compressive strength:<\/strong><\/li>\n<\/ul>\n<p>The maximum stress that a material can bear is called its compressive strength.<\/p>\n<ul>\n<li><strong>Strength:<\/strong><\/li>\n<\/ul>\n<p>The maximum value of stress that a material can bear.<\/p>\n<ul>\n<li><strong>Modulus of elasticity:<\/strong><\/li>\n<\/ul>\n<p>It is the ratio of stress to strain and is determined by the slope of stress strain diagram from 0 to proportional limit. (i.e within elastic limit)<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter size-full wp-image-1786\" src=\"https:\/\/seismicconsolidation.com\/wp-content\/uploads\/2020\/03\/Capture5.png\" alt=\"\" width=\"146\" height=\"444\" srcset=\"https:\/\/seismicconsolidation.com\/wp-content\/uploads\/2020\/03\/Capture5.png 146w, https:\/\/seismicconsolidation.com\/wp-content\/uploads\/2020\/03\/Capture5-99x300.png 99w\" sizes=\"(max-width: 146px) 100vw, 146px\" \/><\/p>\n<ul>\n<li><strong>Elasticity:<\/strong><\/li>\n<\/ul>\n<p>Ability of a body to retain its shape is called its elasticity.<\/p>\n<ul>\n<li><strong>Stiffness (k):<\/strong><\/li>\n<\/ul>\n<p>It is the force required to produce unit deformation.<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter size-full wp-image-1787\" src=\"https:\/\/seismicconsolidation.com\/wp-content\/uploads\/2020\/03\/Capture6.png\" alt=\"\" width=\"96\" height=\"152\" \/><\/p>\n<ul>\n<li><strong>Isotropic materials:<\/strong><\/li>\n<\/ul>\n<p>The materials which exhibit same properties in different directions are called isotropic. e.g. steel<\/p>\n<ul>\n<li><strong>Anisotropic materials:<\/strong><\/li>\n<\/ul>\n<p>The materials which exhibit different properties in different directions are called an-isotropic. e.g. wood<\/p>\n<p><strong>Failure to wooden cubes when load is applied:<\/strong><\/p>\n<ol>\n<li><strong>Parallel to grains:<\/strong><\/li>\n<\/ol>\n<p>The wooden sample will take more load to fail on applying load. This is because each fiber act as a column to parallel load.<\/p>\n<p><strong>\u00a0 \u00a0 \u00a02. Perpendicular to grains:<\/strong><\/p>\n<p>When load is applied wooden sample will take comparatively less load because each fiber acts as beam and the failure of a single fiber will cause the failure of whole sample.<\/p>\n<p><strong>Procedure<\/strong><strong>:<\/strong><\/p>\n<ol>\n<li>Measure the cross-section and length of the specimen and record the dimensions on the data sheet. The ends of the specimens should be plane and at right angles to the axis of the specimen.<\/li>\n<li>Place the specimen in the machine.<\/li>\n<li>Apply the load continuously until the specimen fails. Record the maximum load.<\/li>\n<li>Draw a sketch, in perspective, indicating the grain of the wood and the manner of failure.<\/li>\n<li>For the specimen with the grains oriented at 90<sup>o<\/sup>, plot the load vs. deformation and determine the proportional limit from the curve.<\/li>\n<li>Compute the compressive strength (for the specimen with 0<sup>o<\/sup> grain orientation) or the proportional limit (for the specimen with 90<sup>o <\/sup>grain orientation).<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<p><strong>Observations and calculations<\/strong><\/p>\n<p><strong><u>\u00a0<\/u><\/strong><\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"128\"><strong>Specimen<\/strong><\/td>\n<td width=\"128\"><strong>L<\/strong><\/td>\n<td width=\"128\"><strong>W<\/strong><\/td>\n<td width=\"128\"><strong>H<\/strong><\/td>\n<td width=\"128\"><strong>A = L x W<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"128\"><strong>\u00a0<\/strong><\/td>\n<td width=\"128\"><strong>(mm)<\/strong><\/td>\n<td width=\"128\"><strong>(mm)<\/strong><\/td>\n<td width=\"128\"><strong>(mm)<\/strong><\/td>\n<td width=\"128\"><strong>(mm<sup>2<\/sup>)<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"128\">Parallel to grains<\/td>\n<td width=\"128\">52.35<\/td>\n<td width=\"128\">51.8<\/td>\n<td width=\"128\">48.3<\/td>\n<td width=\"128\">2711.73<\/td>\n<\/tr>\n<tr>\n<td width=\"128\">Perpendicular to grains<\/td>\n<td width=\"128\">47.95<\/td>\n<td width=\"128\">48.80<\/td>\n<td width=\"128\">50.05<\/td>\n<td width=\"128\">2339.96<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p><strong>Parallel to grains:<\/strong><\/p>\n<p>&nbsp;<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"54\"><strong>Obs.<\/strong><\/td>\n<td width=\"86\"><strong>Load \u2018P\u2019<\/strong><\/td>\n<td width=\"107\"><strong>Deflection gauge reading <\/strong><\/td>\n<td width=\"116\"><strong>Deformation \u2018\u03b4\u2019<\/strong><\/td>\n<td width=\"127\"><strong>%age strain=<\/strong><\/p>\n<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mo>&#8712;<\/mo><mo>=<\/mo><mo>(<\/mo><mi>&#948;<\/mi><mo>&#215;<\/mo><mn>100<\/mn><mo>)<\/mo><mo>\/<\/mo><mi>H<\/mi><\/math>\n<p>&nbsp;<\/td>\n<td width=\"80\"><strong>\u03c3 =<\/strong><\/p>\n<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mi>P<\/mi><mo>\/<\/mo><mi>A<\/mi><\/math>\n<p>&nbsp;<\/td>\n<td width=\"69\"><strong>K=<\/strong><\/p>\n<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mi>P<\/mi><mo>\/<\/mo><mi>&#948;<\/mi><\/math>\n<p>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td width=\"54\"><strong>\u00a0<\/strong><\/td>\n<td width=\"86\"><strong>(kN)<\/strong><\/td>\n<td width=\"107\"><strong>\u00a0<\/strong><\/td>\n<td width=\"116\"><strong>(mm)<\/strong><\/td>\n<td width=\"127\"><strong>\u00a0<\/strong><\/td>\n<td width=\"80\"><strong>N\/mm<sup>2<\/sup><\/strong><\/td>\n<td width=\"69\"><strong>N\/mm<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"54\">1<\/td>\n<td width=\"86\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0<\/td>\n<td width=\"107\">100<\/td>\n<td width=\"116\"><\/td>\n<td width=\"127\"><\/td>\n<td width=\"80\"><\/td>\n<td width=\"69\"><\/td>\n<\/tr>\n<tr>\n<td width=\"54\">2<\/td>\n<td width=\"86\">5<\/td>\n<td width=\"107\">106<\/td>\n<td width=\"116\">0.1524<\/td>\n<td width=\"127\">0.3155<\/td>\n<td width=\"80\">1.843<\/td>\n<td width=\"69\">32808<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">3<\/td>\n<td width=\"86\">10<\/td>\n<td width=\"107\">108<\/td>\n<td width=\"116\">0.2032<\/td>\n<td width=\"127\">0.4207<\/td>\n<td width=\"80\">3.687<\/td>\n<td width=\"69\">49212<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">4<\/td>\n<td width=\"86\">15<\/td>\n<td width=\"107\">110<\/td>\n<td width=\"116\">0.254<\/td>\n<td width=\"127\">0.5258<\/td>\n<td width=\"80\">5.531<\/td>\n<td width=\"69\">59055<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">5<\/td>\n<td width=\"86\">20<\/td>\n<td width=\"107\">113<\/td>\n<td width=\"116\">0.3302<\/td>\n<td width=\"127\">0.6836<\/td>\n<td width=\"80\">7.375<\/td>\n<td width=\"69\">60569<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">6<\/td>\n<td width=\"86\">25<\/td>\n<td width=\"107\">114<\/td>\n<td width=\"116\">0.3556<\/td>\n<td width=\"127\">0.7362<\/td>\n<td width=\"80\">9.219<\/td>\n<td width=\"69\">70303<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">7<\/td>\n<td width=\"86\">30<\/td>\n<td width=\"107\">115<\/td>\n<td width=\"116\">0.381<\/td>\n<td width=\"127\">0.7888<\/td>\n<td width=\"80\">11.063<\/td>\n<td width=\"69\">78740<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">8<\/td>\n<td width=\"86\">35<\/td>\n<td width=\"107\">117<\/td>\n<td width=\"116\">0.4318<\/td>\n<td width=\"127\">0.8939<\/td>\n<td width=\"80\">12.906<\/td>\n<td width=\"69\">81056<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">9<\/td>\n<td width=\"86\">40<\/td>\n<td width=\"107\">119<\/td>\n<td width=\"116\">0.4826<\/td>\n<td width=\"127\">0.9991<\/td>\n<td width=\"80\">14.75<\/td>\n<td width=\"69\">82901<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">10<\/td>\n<td width=\"86\">45<\/td>\n<td width=\"107\">121<\/td>\n<td width=\"116\">0.5334<\/td>\n<td width=\"127\">1.1043<\/td>\n<td width=\"80\">16.594<\/td>\n<td width=\"69\">84364<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">11<\/td>\n<td width=\"86\">50<\/td>\n<td width=\"107\">123<\/td>\n<td width=\"116\">0.5842<\/td>\n<td width=\"127\">1.2095<\/td>\n<td width=\"80\">18.438<\/td>\n<td width=\"69\">85587<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">12<\/td>\n<td width=\"86\">55<\/td>\n<td width=\"107\">124<\/td>\n<td width=\"116\">0.6096<\/td>\n<td width=\"127\">1.2621<\/td>\n<td width=\"80\">20.282<\/td>\n<td width=\"69\">90223<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">13<\/td>\n<td width=\"86\">60<\/td>\n<td width=\"107\">126<\/td>\n<td width=\"116\">0.6604<\/td>\n<td width=\"127\">1.3672<\/td>\n<td width=\"80\">22.126<\/td>\n<td width=\"69\">90854<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">14<\/td>\n<td width=\"86\">\u00a0\u00a0\u00a0\u00a0\u00a0 65<\/td>\n<td width=\"107\">128<\/td>\n<td width=\"116\">0.7112<\/td>\n<td width=\"127\">1.4724<\/td>\n<td width=\"80\">23.969<\/td>\n<td width=\"69\">91394<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">15<\/td>\n<td width=\"86\">70<\/td>\n<td width=\"107\">130<\/td>\n<td width=\"116\">0.762<\/td>\n<td width=\"127\">1.5776<\/td>\n<td width=\"80\">25.813<\/td>\n<td width=\"69\">91863<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">16<\/td>\n<td width=\"86\">75<\/td>\n<td width=\"107\">132<\/td>\n<td width=\"116\">0.8128<\/td>\n<td width=\"127\">1.6828<\/td>\n<td width=\"80\">27.657<\/td>\n<td width=\"69\">92273<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">17<\/td>\n<td width=\"86\">80<\/td>\n<td width=\"107\">135<\/td>\n<td width=\"116\">0.889<\/td>\n<td width=\"127\">1.8405<\/td>\n<td width=\"80\">29.501<\/td>\n<td width=\"69\">89988<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">18<\/td>\n<td width=\"86\">85<\/td>\n<td width=\"107\">138<\/td>\n<td width=\"116\">0.9652<\/td>\n<td width=\"127\">1.9983<\/td>\n<td width=\"80\">31.345<\/td>\n<td width=\"69\">88064<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">19<\/td>\n<td width=\"86\">90<\/td>\n<td width=\"107\">143<\/td>\n<td width=\"116\">1.0922<\/td>\n<td width=\"127\">2.2612<\/td>\n<td width=\"80\">33.189<\/td>\n<td width=\"69\">82402<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">20<\/td>\n<td width=\"86\">95<\/td>\n<td width=\"107\">150<\/td>\n<td width=\"116\">1.27<\/td>\n<td width=\"127\">2.6293<\/td>\n<td width=\"80\">35.032<\/td>\n<td width=\"69\">74803<\/td>\n<\/tr>\n<tr>\n<td width=\"54\">21<\/td>\n<td width=\"86\">99.5<\/td>\n<td width=\"107\">176<\/td>\n<td width=\"116\">1.9304<\/td>\n<td width=\"127\">3.9966<\/td>\n<td width=\"80\">36.692<\/td>\n<td width=\"69\">51543<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><img loading=\"lazy\" class=\"aligncenter size-full wp-image-1791\" src=\"https:\/\/seismicconsolidation.com\/wp-content\/uploads\/2020\/03\/Capture.PNG10.jpg\" alt=\"\" width=\"623\" height=\"326\" srcset=\"https:\/\/seismicconsolidation.com\/wp-content\/uploads\/2020\/03\/Capture.PNG10.jpg 623w, https:\/\/seismicconsolidation.com\/wp-content\/uploads\/2020\/03\/Capture.PNG10-300x157.jpg 300w\" sizes=\"(max-width: 623px) 100vw, 623px\" \/><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter size-full wp-image-1788\" src=\"https:\/\/seismicconsolidation.com\/wp-content\/uploads\/2020\/03\/Capture7.png\" alt=\"\" width=\"388\" height=\"476\" srcset=\"https:\/\/seismicconsolidation.com\/wp-content\/uploads\/2020\/03\/Capture7.png 388w, https:\/\/seismicconsolidation.com\/wp-content\/uploads\/2020\/03\/Capture7-245x300.png 245w, https:\/\/seismicconsolidation.com\/wp-content\/uploads\/2020\/03\/Capture7-300x368.png 300w\" sizes=\"(max-width: 388px) 100vw, 388px\" \/><\/p>\n<p style=\"text-align: center;\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Stress strain graph when wood is placed parallel to grains<\/p>\n<p>Hence slope = 10.017<\/p>\n<p><strong>Perpendicular to grains:<\/strong><\/p>\n<table width=\"641\">\n<tbody>\n<tr>\n<td width=\"53\"><strong>Obs.<\/strong><\/td>\n<td width=\"63\"><strong>Load \u2018P\u2019<\/strong><\/td>\n<td width=\"95\"><strong>Deflection gauge reading <\/strong><\/td>\n<td width=\"116\"><strong>Deformation \u2018\u03b4\u2019<\/strong><\/td>\n<td width=\"110\"><strong>%age strain=<\/strong><\/p>\n<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mo>&#8712;<\/mo><mo>=<\/mo><mo>(<\/mo><mi>&#948;<\/mi><mo>&#215;<\/mo><mn>100<\/mn><mo>)<\/mo><mo>\/<\/mo><mi>H<\/mi><\/math>\n<p>&nbsp;<\/td>\n<td width=\"90\"><strong>\u03c3 =<\/strong><\/p>\n<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mi>P<\/mi><mo>\/<\/mo><mi>A<\/mi><\/math>\n<p>&nbsp;<\/td>\n<td width=\"114\"><strong>K=<\/strong><\/p>\n<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mi>P<\/mi><mo>\/<\/mo><mi>&#948;<\/mi><\/math>\n<p>&nbsp;<\/td>\n<\/tr>\n<tr>\n<td width=\"53\"><strong>\u00a0<\/strong><\/td>\n<td width=\"63\"><strong>(kN)<\/strong><\/td>\n<td width=\"95\"><strong>\u00a0<\/strong><\/td>\n<td width=\"116\"><strong>(mm)<\/strong><\/td>\n<td width=\"110\"><strong>\u00a0<\/strong><\/td>\n<td width=\"90\"><strong>N\/mm<sup>2<\/sup><\/strong><\/td>\n<td width=\"114\"><strong>N\/mm<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"53\">1<\/td>\n<td width=\"63\">0<\/td>\n<td width=\"95\">100<\/td>\n<td width=\"116\"><\/td>\n<td width=\"110\"><\/td>\n<td width=\"90\"><\/td>\n<td width=\"114\"><\/td>\n<\/tr>\n<tr>\n<td width=\"53\">2<\/td>\n<td width=\"63\">1<\/td>\n<td width=\"95\">103<\/td>\n<td width=\"116\">0.0762<\/td>\n<td width=\"110\">0.1522<\/td>\n<td width=\"90\">0.4273<\/td>\n<td width=\"114\">13123<\/td>\n<\/tr>\n<tr>\n<td width=\"53\">3<\/td>\n<td width=\"63\">1.5<\/td>\n<td width=\"95\">112<\/td>\n<td width=\"116\">0.3048<\/td>\n<td width=\"110\">0.6089<\/td>\n<td width=\"90\">0.6410<\/td>\n<td width=\"114\">4921<\/td>\n<\/tr>\n<tr>\n<td width=\"53\">4<\/td>\n<td width=\"63\">2<\/td>\n<td width=\"95\">135<\/td>\n<td width=\"116\">0.889<\/td>\n<td width=\"110\">1.7762<\/td>\n<td width=\"90\">0.8547<\/td>\n<td width=\"114\">2249<\/td>\n<\/tr>\n<tr>\n<td width=\"53\">5<\/td>\n<td width=\"63\">2.5<\/td>\n<td width=\"95\">203<\/td>\n<td width=\"116\">2.6162<\/td>\n<td width=\"110\">5.2271<\/td>\n<td width=\"90\">1.0683<\/td>\n<td width=\"114\">955<\/td>\n<\/tr>\n<tr>\n<td width=\"53\">6<\/td>\n<td width=\"63\">3<\/td>\n<td width=\"95\">294<\/td>\n<td width=\"116\">4.9276<\/td>\n<td width=\"110\">9.8453<\/td>\n<td width=\"90\">1.2820<\/td>\n<td width=\"114\">608<\/td>\n<\/tr>\n<tr>\n<td width=\"53\">7<\/td>\n<td width=\"63\">3.5<\/td>\n<td width=\"95\">390<\/td>\n<td width=\"116\">7.366<\/td>\n<td width=\"110\">14.7172<\/td>\n<td width=\"90\">1.4957<\/td>\n<td width=\"114\">475<\/td>\n<\/tr>\n<tr>\n<td width=\"53\">8<\/td>\n<td width=\"63\">4<\/td>\n<td width=\"95\">464<\/td>\n<td width=\"116\">9.2456<\/td>\n<td width=\"110\">18.4727<\/td>\n<td width=\"90\">1.7094<\/td>\n<td width=\"114\">432<\/td>\n<\/tr>\n<tr>\n<td width=\"53\">9<\/td>\n<td width=\"63\">4.5<\/td>\n<td width=\"95\">536<\/td>\n<td width=\"116\">11.0744<\/td>\n<td width=\"110\">22.1266<\/td>\n<td width=\"90\">1.9231<\/td>\n<td width=\"114\">406<\/td>\n<\/tr>\n<tr>\n<td width=\"53\">10<\/td>\n<td width=\"63\">5<\/td>\n<td width=\"95\">597<\/td>\n<td width=\"116\">12.6238<\/td>\n<td width=\"110\">25.2223<\/td>\n<td width=\"90\">2.1367<\/td>\n<td width=\"114\">396<\/td>\n<\/tr>\n<tr>\n<td width=\"53\">11<\/td>\n<td width=\"63\">5.5<\/td>\n<td width=\"95\">664<\/td>\n<td width=\"116\">14.3256<\/td>\n<td width=\"110\">28.6225<\/td>\n<td width=\"90\">2.3504<\/td>\n<td width=\"114\">383<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong> <img loading=\"lazy\" class=\"aligncenter size-full wp-image-1789\" src=\"https:\/\/seismicconsolidation.com\/wp-content\/uploads\/2020\/03\/Capture8.png\" alt=\"\" width=\"554\" height=\"510\" srcset=\"https:\/\/seismicconsolidation.com\/wp-content\/uploads\/2020\/03\/Capture8.png 554w, https:\/\/seismicconsolidation.com\/wp-content\/uploads\/2020\/03\/Capture8-300x276.png 300w\" sizes=\"(max-width: 554px) 100vw, 554px\" \/><\/strong><\/p>\n<p><strong>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <img loading=\"lazy\" class=\"aligncenter size-full wp-image-1790\" src=\"https:\/\/seismicconsolidation.com\/wp-content\/uploads\/2020\/03\/Capture9.png\" alt=\"\" width=\"557\" height=\"336\" srcset=\"https:\/\/seismicconsolidation.com\/wp-content\/uploads\/2020\/03\/Capture9.png 557w, https:\/\/seismicconsolidation.com\/wp-content\/uploads\/2020\/03\/Capture9-300x180.png 300w\" sizes=\"(max-width: 557px) 100vw, 557px\" \/> <\/strong><\/p>\n<p style=\"text-align: center;\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Stress to strain graph when wood is placed perpendicular to grains<\/p>\n<p>Hence slope = 0.3886<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Job # 4 To carry out compression test on wooden cubes when load is applied Parallel to grains Perpendicular to the grains. Objective: To determine compressive strength of wood To determine modulus of elasticity \u20ac and modulus of stiffness (K) To observe an-isotropic behavior of wood. Apparatus: Wooden samples Vernier calipers Deflection gauge Shimadzu 500kN&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[159],"tags":[165,166,164],"_links":{"self":[{"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/posts\/1784"}],"collection":[{"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/comments?post=1784"}],"version-history":[{"count":2,"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/posts\/1784\/revisions"}],"predecessor-version":[{"id":1794,"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/posts\/1784\/revisions\/1794"}],"wp:attachment":[{"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/media?parent=1784"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/categories?post=1784"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/tags?post=1784"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}