Implementation of Piezoelectric (PZT) Sensors on the Boeing 737NG Aft Pressure Bulkhead Structure

Abstract

This paper summarizes the results of the validation testing conducted to support the development of piezoelectric (PZT) sensors for crack detection in the 737NG Aft Pressure Bulkhead (APB) web at the Y-chord. The objectives of the tests were to evaluate detection capability, durability and reliability of PZT sensors under various environments and temperatures. The test results herein were collected from Boeing Laboratory, the FAA Technical Center and Stanford University. The results contained in this document are for engineering development purposes.