Leaf Spring Testing Machine: A Review

Spring is basically an elastic body whose purpose is to distort under loading conditions and consequently store energy and releases it slowly or rapidly depending on the particular application. The spring needs to be tested before its final assembly. For automotive springs, the most relevant performance characteristic is stiffness under load.. Stiffness of the spring means load required for unit deflection, it is also known as spring index and is main parameter for specification of springs. Springs like Compression helical spring, Tension helical spring, Leaf spring of various sizes and shapes are designed and manufactured. But to check their stiffness is very difficult unless we have such machine. Leaf spring Stiffness checking machine is useful for spring manufacturer as well as spring purchasers for checking the stiffness. It involves the designing and analyzing of leaf spring testing machine. The suspension mechanism in a automobile significantly affects the behavior of vehicle. Leaf springs are subjected to millions of varying stress cycles loading to fatigue failure. So, it becomes mandatory to check for the spring stiffness and its strength before it is installed to perform for any applications.