Junker Testing

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Innovative Test Solutions, Inc. is ISO/IEC 17025 accredited to conduct DIN 25201 Junker testing on bolted joints of all sizes.

A Junker test is a mechanical study that evaluates the self-loosening behavior of bolted joints. This is achieved by subjecting the joint to dynamic shear loading which is caused by transverse vibration. The goal of testing is to determine how many cycles at which the joint loses preload. This information allows engineers to specify the safety and quality of joints that will fully meet their application standards.