Simple Connector Lab - Bearing/Compression Failure Test

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Simple Connector Lab This innovative connector was crafted by SDSU students as part of an experiment. The connector is engineered to fracture at a precise compressive force, enabling researchers to determine the ultimate bearing/compressive strength of 3D printed materials. Our testing revealed that the average ultimate bearing/compressive strength of 3D printed PLA is 34.3 MPa (5000 psi). To calculate the ultimate bearing/compressive strength of the material, use the following equation: B = P / A Where: P = The load at which the specimen broke -The connector is designed to break between 2.8 kgs and 3.0 kgs or 6.2 to 6.6 lbs. A = Area of failure surface = (Thickness of layer below block) * Perimeter -The failure surface for the bearing/compressive connector is the area at the bottom of the small peg - Dimensions are designed to be 2 mm x 0.4 mm; however, measure these values with a caliper to confirm. This lab aims to provide students with hands-on experience in basic engineering design and furnish them with the mechanical properties of 3D printed materials, which can be used in future design for later labs. More information on this lab and other labs will become available soon in the form of a lab manual from South Dakota State University.