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Spot Hidden Problems in Bonded Metals with a DLRO

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Bonded metals often get hairline cracks due to the difference of metals. Their coefficients of thermal expansion causes them to expand and stress the joint. The joint weakens and can be dangerous if not addressed immediately. Visual inspection is not enough because the cracks may be inside the welded joint. 

To help diagnose problems in welded metals, a 
digital low resistance Ohmmeter is used. This tool allows technicians to measure very low resistances in metals. Problems are detected by measuring the resistance constant of the metals. The presence of gaps, contaminants and moisture can change the resistance. Weak joints can affect the reliability of metal structures and can put your assets at risk of damage. Detecting problems early lets you recondition and strengthen the joint. 

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