Tinius Olsen Engineers have designed a new custom attachment for testing the bearing strength of plastics. This attachment is used with Tinius Olsen’s S and/or T series of benchtop tensile testers and Horizon software to report bearing strength. The bearing strength test is designed to replicate the loading on plastics sheet, or plastics products, where rivets, bolts or similar fasteners are used to join sections and show the bearing stress versus the deformation of the hole for rivet/bolt etc. The allowable deformation of the hole in the material should be enough so that there is no looseness of the joint. As the picture shows, the grip includes an LVDT Extensometer that precisely measures the amount of hole deformation. This attachment follows the guidelines of ASTM D953.