Automobile performance and passenger safety both rely on sound welds. A new, high-frequency ultrasonic MPA probe performs nondestructive inspection of these welds, saving time and cost. Advanced high-strength steels (AHSS) were introduced to the automotive industry to reduce vehicle weight and are gaining momentum due to initiatives that call for increased body rigidity (driving performance) and improved crash ratings and fuel efficiency. One major challenge these steels present involves the integrity of spot welds. There are roughly 4000-7000 resistance spot welds on every U.S.-made automobile and the reliability of the body structure and passenger safety both rely on sound welds.
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