Patent ID: 9151733
Filing Date: 2015-10-06
Classification: G01N

Abstract:
1. A sensor array for non-destructively monitoring a structure to detect a critical structural event, said sensor array comprising: (a) at least one discrete AE sensor node for producing an electrical signal in response to a structural event; (b) at least one shear wave sensor assembly, said shear wave sensor assembly including at least one pair of shear wave sensors, each shear wave sensor of said at least one pair of shear wave sensors having a length to provide a longitudinal axis of the shear wave sensor, and said at least one pair of shear wave sensors being oriented in a plane and at about a 90 degree angle with respect to one another along each sensor's longitudinal axis; (c) a gate module connected to said at least one discrete AE sensor node and to said at least one shear wave sensor assembly, whereby said gate module is adapted to pass through said electrical signal from said at least one discrete AE sensor node in response to a pre-determined signal from said at least one shear wave sensor assembly; and (d) a signal processing module for receiving and processing said discrete AE sensor output signal.