Ensuring the structural integrity of a building
IMPORTANCE OF NUTS & BOLTS
Nuts and bolts go together and they contribute a significant role as steel fasteners to connect or join two or more components of metal to metal or metal to non-metal materials. They are universally considered important fasteners. Therefore, they must be strictly controlled.
They are used in construction of machinery and equipment, as well as vehicles and buildings. Bolts and nuts made from inferior materials or manufactured cheaply are weak and can make a structure unsafe. Choosing lower quality nuts and bolts to reduce costs causes problems as they deteriorate or don’t form a tight seal between materials. Since mechanical stress is concentrated on these types of connection points, the integrity of screws and nuts is extremely important, which also makes them subject to strict safety requirements.
TESTING APPROACH
Proof load technique is an amount of force that a fastener must be able to withstand without permanently deforming. It is typically performed on finished components such as bolts and nuts as part of a quality control process to verify if the batch of components are able to hold their rated design load without failure.
A fastener’s ultimate tensile strength is the force at which the fastener fractures. To perform this test, the specimens are loaded individually in the tensile machine and, depending on the relevant product specifications, a specified load is applied to it for a set time. If the product breaks, yields or show signs of cracking, the product is considered to have failed the test. NDT tests are often used in conjunction with the Proof Load Test to ensure any fine cracks are detected before and after testing.
Proof load technique is an amount of force that a fastener must be able to withstand without permanently deforming. It is typically performed on finished components such as bolts and nuts as part of a quality control process to verify if the batch of components are able to hold their rated design load without failure.
To perform this test, the specimens are loaded individually in the tensile machine and, depending on the relevant product specifications, a specified load is applied to it for a set time till it fractures.
APPLICATION OF PROOF LOAD TEST
Determine the load-bearing capacity of a structure or equipment
Test fastener capabilities in holding components
Know the yield strength and ultimate strength of bolt and nut
Talk to us today
Professional Testing Services offer compression & proof load test on fasteners, nuts and bolts in a variety of sizes. Our testing team will find the optimal testing solution for your sample. For more information on proof testing, call us or send us an enquiry today.
