{"id":1767,"date":"2020-03-23T07:21:26","date_gmt":"2020-03-23T07:21:26","guid":{"rendered":"https:\/\/seismicconsolidation.com\/?p=1767"},"modified":"2020-03-23T07:25:22","modified_gmt":"2020-03-23T07:25:22","slug":"to-perform-bending-test-on-a-wooden-beam","status":"publish","type":"post","link":"https:\/\/seismicconsolidation.com\/to-perform-bending-test-on-a-wooden-beam\/","title":{"rendered":"To perform bending test on a wooden beam"},"content":{"rendered":"

Job # 7<\/strong><\/p>\n

To perform bending test on a wooden beam<\/strong><\/p>\n

Objective:<\/strong><\/p>\n

    \n
  1. To study the bending behavior of a wooden beam<\/li>\n
  2. To determine the modulus of rupture and modulus of elasticity of beam<\/li>\n<\/ol>\n

    Apparatus:<\/strong><\/p>\n

      \n
    1. 10 ton Buckton UTM<\/li>\n
    2. Wooden beam<\/li>\n
    3. 3 deflection gages<\/li>\n
    4. Measuring tape<\/li>\n<\/ol>\n

      Related theory:<\/strong><\/p>\n

        \n
      1. Bending moment:<\/strong><\/li>\n<\/ol>\n

        The algebraic sum of moment of all the transverse forces acting on either the left or right side of any section about this section is called bending moment at this location.<\/p>\n

          \n
        1. Shear force:<\/strong><\/li>\n<\/ol>\n

          A force which tends to slide one part of a section against the adjacent.<\/p>\n

            \n
          1. Elastic curve:<\/strong><\/li>\n<\/ol>\n

            The deflected shape of the beam after the application of load (in elastic range).<\/p>\n

              \n
            1. Bending stress\/ flexural stress:<\/strong><\/li>\n<\/ol>\n

              The stresses caused by bending moment are known as bending or flexural stresses.<\/p>\n

                \n
              1. Bending formula\/ flexural formula:<\/strong><\/li>\n<\/ol>\n

                The relation between these stresses and the bending moment is expressed by flexural formula:<\/p>\n

                \nσ<\/mi>=<\/mo>M<\/mi>y<\/mi><\/mrow>I<\/mi> <\/mo><\/mrow><\/mfrac><\/math>\n<\/p>\n
                  \n
                1. Modulus of rupture:<\/strong><\/li>\n<\/ol>\n

                  It is the maximum tensile stress which can be developed in the beam before failure.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
                  No of obs.<\/strong><\/td>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Load <\/strong><\/td>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Deflection gage reading<\/strong><\/td>\n\n∆<\/mo>=<\/mo>(<\/mo>G<\/mi>c<\/mi>–<\/mo>m<\/mi>e<\/mi>a<\/mi>n<\/mi>)<\/mo>×<\/mo>L<\/mi>.<\/mo>C<\/mi>×<\/mo>25<\/mn>.<\/mo>4<\/mn><\/math>\n<\/td>\n<\/tr>\n
                  <\/td>\n\u00a0<\/strong><\/td>\n\u00a0<\/strong><\/td>\nGx<\/strong><\/td>\nGy<\/strong><\/td>\n\n(<\/mo>G<\/mi>x<\/mi>+<\/mo>G<\/mi>y<\/mi>)<\/mo>\/<\/mo>2<\/mn><\/math>\n<\/td>\nGc<\/strong><\/td>\n\u00a0<\/strong><\/td>\n<\/tr>\n
                  <\/td>\nton<\/strong><\/td>\nN<\/strong><\/td>\nin<\/strong><\/td>\nin<\/strong><\/td>\nin<\/strong><\/td>\nin<\/strong><\/td>\nmm<\/strong><\/td>\n<\/tr>\n
                  1<\/strong><\/td>\n0<\/td>\n0<\/td>\n100<\/td>\n100<\/td>\n100<\/td>\n200<\/td>\n2.54<\/td>\n<\/tr>\n
                  2<\/strong><\/td>\n0.05<\/td>\n445<\/td>\n110<\/td>\n110<\/td>\n110<\/td>\n210<\/td>\n2.54<\/td>\n<\/tr>\n
                  3<\/strong><\/td>\n0.1<\/td>\n890<\/td>\n120<\/td>\n120<\/td>\n120<\/td>\n230<\/td>\n2.794<\/td>\n<\/tr>\n
                  4<\/strong><\/td>\n0.15<\/td>\n1335<\/td>\n130<\/td>\n130<\/td>\n130<\/td>\n250<\/td>\n3.048<\/td>\n<\/tr>\n
                  5<\/strong><\/td>\n0.2<\/td>\n1780<\/td>\n140<\/td>\n140<\/td>\n140<\/td>\n260<\/td>\n3.048<\/td>\n<\/tr>\n
                  6<\/strong><\/td>\n0.25<\/td>\n2225<\/td>\n150<\/td>\n150<\/td>\n150<\/td>\n270<\/td>\n3.048<\/td>\n<\/tr>\n
                  7<\/strong><\/td>\n0.3<\/td>\n2670<\/td>\n160<\/td>\n160<\/td>\n160<\/td>\n290<\/td>\n3.302<\/td>\n<\/tr>\n
                  8<\/strong><\/td>\n0.35<\/td>\n3115<\/td>\n190<\/td>\n190<\/td>\n190<\/td>\n325<\/td>\n3.429<\/td>\n<\/tr>\n
                  9<\/strong><\/td>\n0.4<\/td>\n3560<\/td>\n200<\/td>\n200<\/td>\n200<\/td>\n345<\/td>\n3.683<\/td>\n<\/tr>\n
                  10<\/strong><\/td>\n0.45<\/td>\n4005<\/td>\n220<\/td>\n220<\/td>\n220<\/td>\n365<\/td>\n3.683<\/td>\n<\/tr>\n
                  11<\/strong><\/td>\n0.5<\/td>\n4450<\/td>\n240<\/td>\n240<\/td>\n240<\/td>\n400<\/td>\n4.064<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                   <\/p>\n

                  \"\"<\/p>\n

                  Observations and calculations:<\/strong><\/p>\n

                  a = 150 mm<\/p>\n

                  b = h = 50 mm<\/p>\n

                  l = 500 mm<\/p>\n

                  Slope from graph = \u00a0<\/p>\nP<\/mi>‘<\/mo>\/<\/mo>d<\/mi><\/math>\n

                  = 445<\/p>\n

                  Maximum value of load = P = 2.05 tons = 18245 N<\/p>\n

                  \"\"<\/p>\n

                   <\/p>\n

                   <\/p>\n

                  \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/strong><\/p>\n

                  \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/strong><\/p>\n

                   <\/p>\n","protected":false},"excerpt":{"rendered":"

                  Job # 7 To perform bending test on a wooden beam Objective: To study the bending behavior of a wooden beam To determine the modulus of rupture and modulus of elasticity of beam Apparatus: 10 ton Buckton UTM Wooden beam 3 deflection gages Measuring tape Related theory: Bending moment: The algebraic sum of moment of…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[159],"tags":[161],"_links":{"self":[{"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/posts\/1767"}],"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=1767"}],"version-history":[{"count":4,"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/posts\/1767\/revisions"}],"predecessor-version":[{"id":1773,"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/posts\/1767\/revisions\/1773"}],"wp:attachment":[{"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/media?parent=1767"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/categories?post=1767"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/tags?post=1767"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}