Low frequency ultrasonic nondestructive inspection of aluminum/adhesive fuselage lap splice

The Federal Aviation Administration\u27s (FAA) Center for Aviation Systems Reliability (CASR), located at Iowa State University (ISU), was established in 1990 in response to the Aviation Safety Act (Public Law 100-591) of 1988. The Aviation Safety Act, created primarily as the result of an in-flight mishap involving an Aloha Airlines\u27 Boeing 737, mandated that the FAA develop research technologies to aid the aviation industry to (1) better predict the effects of design, maintenance, testing, wear, and fatigue life of an aircraft; (2) develop methods for improving aircraft maintenance technology and practices; and (3) expand general long-range research activities applicable to aviation systems