{"id":1795,"date":"2020-03-23T09:29:01","date_gmt":"2020-03-23T09:29:01","guid":{"rendered":"https:\/\/seismicconsolidation.com\/?p=1795"},"modified":"2020-03-23T09:29:01","modified_gmt":"2020-03-23T09:29:01","slug":"to-perform-direct-shear-test-on-a-plane-steel-bar-and-punching-shear-test-on-steel-plate","status":"publish","type":"post","link":"https:\/\/seismicconsolidation.com\/to-perform-direct-shear-test-on-a-plane-steel-bar-and-punching-shear-test-on-steel-plate\/","title":{"rendered":"To perform direct shear test on a plane steel bar and punching shear test on steel plate"},"content":{"rendered":"

Job 3<\/strong><\/p>\n

To perform direct shear test on a plane steel bar and punching shear test on steel plate<\/strong><\/p>\n

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

To determine the shear strength of steel samples<\/p>\n

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

    \n
  1. 10 ton Buckton UTM<\/li>\n
  2. Shear jigs<\/li>\n
  3. Vernier calipers<\/li>\n
  4. Steel bar<\/li>\n
  5. Steel plate<\/li>\n<\/ol>\n

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

      \n
    • Shear force (V) :<\/strong><\/li>\n<\/ul>\n

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

        \n
      • Shear stress \/ tangential stress (
        \nτ<\/mi><\/math>\n

        <\/strong> ):<\/strong><\/li>\n<\/ul>\n

        It is the intensity of the internal forces on a plane area when the forces are acting parallel to the section.<\/p>\n

        \"\"<\/p>\n

        Note: <\/strong>A uniform shearing stress will exist when the resultant shear force passes through the centroid of the cross section being sheared.<\/p>\n

          \n
        • Types of shear stress:<\/strong><\/li>\n<\/ul>\n
            \n
          1. Direct shear:<\/strong><\/li>\n<\/ol>\n

            If the force applied is parallel to the area being sheared, then it is direct shear.<\/p>\n

            Following are the types of direct shear.<\/p>\n

              \n
            • Single shear:<\/strong><\/li>\n<\/ul>\n

              Shear stress induced due to a force causing single area of cross section to be sheared is called single shear.<\/strong><\/p>\n

              \"\"<\/p>\n

                \n
              • Double shear:<\/strong><\/li>\n<\/ul>\n

                Shear stress induced due to a force causing double area of cross section to be sheared.<\/p>\n

                \"\"<\/p>\n

                 <\/p>\n

                  \n
                • Punching shear:<\/strong><\/li>\n<\/ul>\n

                  Shear stress induced due to a force causing one part to be punched into the other.<\/p>\n

                  Area being sheared is again parallel to applied load.<\/p>\n

                  \"\"<\/p>\n

                   <\/p>\n

                   <\/p>\n

                    \n
                  1. Induced shear:<\/strong><\/li>\n<\/ol>\n

                    Shearing stress induced due to a force which acts at an angle to the area being sheared.<\/p>\n

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

                      \n
                    1. Insert the specimen in position and grip one end of the attachment in the upper portion and one end in the lower position<\/li>\n
                    2. Switch on the UTM<\/li>\n
                    3. Bring the drag indicator in contact with the main indicator.<\/li>\n
                    4. Select the suitable range of loads and space the corresponding weight in the pendulum and balance it if necessary with the help of small balancing weights<\/li>\n
                    5. Operate (push) the button for driving the motor to drive the pump.<\/li>\n
                    6. Gradually move the head control ever in left hand direction till the specimen shears.<\/li>\n
                    7. Note down the load at which the specimen shears.<\/li>\n
                    8. Stop the machine and remove the specimen.<\/li>\n<\/ol>\n

                      Repeat the experiment with other specimens.<\/p>\n

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

                      For direct shear test on plane steel bar:<\/strong><\/p>\n\n\n\n\n\n\n
                      Shear load<\/strong><\/td>\nDiameter (d)<\/strong><\/td>\nAvg. (d)<\/strong><\/td>\nArea=<\/p>\nπ<\/mi>d<\/mi>²<\/mo>\/<\/mo>4<\/mn><\/math>\n

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

                       <\/td>\n

                      		Shear strength=<\/p>\nτ<\/mi>=<\/mo>V<\/mi>\/<\/mo>A<\/mi><\/math>\n

                      <\/strong><\/td>\n<\/tr>\n

                      (mm)<\/strong><\/td>\n<\/tr>\n
                      Tons<\/strong><\/td>\nN<\/strong><\/td>\nD1<\/sub><\/strong><\/td>\nD2<\/sub><\/strong><\/td>\nD3<\/sub><\/strong><\/td>\nmm<\/strong><\/td>\nmm2<\/sup><\/strong><\/td>\nMPa<\/strong><\/td>\nPsi<\/strong><\/td>\n<\/tr>\n
                      1.132<\/td>\n10074.8<\/td>\n6.50<\/td>\n6.55<\/td>\n6.70<\/td>\n6.58<\/td>\n34<\/td>\n296.3<\/td>\n42975<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                       <\/p>\n

                      For punching shear test on a steel plate:<\/strong><\/p>\n\n\n\n\n\n\n
                      Shear load<\/strong><\/td>\nDiameter of jigs (d)<\/strong><\/td>\nAvg. (d)<\/strong><\/td>\nPlate thickness<\/strong><\/p>\n

                      (t)<\/strong><\/td>\n

                      		Shear area<\/strong><\/p>\n

                      <\/p>\n(<\/mo>π<\/mi>d<\/mi>t<\/mi><\/math>\n

                      )<\/strong><\/td>\n

                      		Shear strength=<\/p>\nτ<\/mi>=<\/mo>V<\/mi>\/<\/mo>A<\/mi><\/math>\n

                      <\/strong><\/td>\n<\/tr>\n

                      (mm)<\/strong><\/td>\n<\/tr>\n
                      Tons<\/strong><\/td>\nN<\/strong><\/td>\nUpper jig<\/strong><\/td>\nLower jig<\/strong><\/td>\nmm<\/strong><\/td>\nmm<\/strong><\/td>\nmm2<\/sup><\/strong><\/td>\nMPa<\/strong><\/td>\nPsi<\/strong><\/td>\n<\/tr>\n
                      2.586<\/td>\n23015.4<\/td>\n14.90<\/td>\n15.20<\/td>\n15.05<\/td>\n2.10<\/td>\n99.29<\/td>\n231.79<\/td>\n33618.9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                      \u00a0<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

                      Job 3 To perform direct shear test on a plane steel bar and punching shear test on steel plate Objective: To determine the shear strength of steel samples Apparatus: 10 ton Buckton UTM Shear jigs Vernier calipers Steel bar Steel plate Related theory: Shear force (V) : A force which tends to slide one part…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[159],"tags":[167],"_links":{"self":[{"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/posts\/1795"}],"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=1795"}],"version-history":[{"count":1,"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/posts\/1795\/revisions"}],"predecessor-version":[{"id":1800,"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/posts\/1795\/revisions\/1800"}],"wp:attachment":[{"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/media?parent=1795"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/categories?post=1795"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/seismicconsolidation.com\/wp-json\/wp\/v2\/tags?post=1795"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}