Air Movement and Control Association (AMCA) International Inc. announces the publication of ANSI/AMCA Standard 540-23, Test Method for Louvers Impacted by Wind Borne Debris. Superseding ANSI/AMCA ...
Figure 1. Ultrasonic testing using pulse echo and through-transmission methods. Pulse echo (left and center) uses a transducer that sends and receives ultrasound energy, producing both A- and B-scan ...
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