Location

Brunswick, ME

Start Date

1-1-1997 12:00 AM

Description

Plate elements are common engineering structures and it is important to monitor damage evolution in these plates to ensure the integrity of the structure. Due to stress concentration in the vicinity of existing defects such as voids, inhomogeneities and surface cracks, microfracture events may occur locally in a plate highly stressed before final failure takes place. As a result, the stored strain energy radiates out in the form of elastic waves which carry information regarding the nature of the source. Due to the highly dispersive character of Lamb waves, their forms change as the disturbance propagates away from the source, and understanding the characteristics of these waves is a prerequisite to extracting source information from measured waveform.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

16A

Chapter

Chapter 1: Standard Techniques

Section

Acoustic Emission

Pages

397-404

DOI

10.1007/978-1-4615-5947-4_53

Language

en

File Format

application/pdf

Share

COinS
 
Jan 1st, 12:00 AM

Lamb Waves from Microfractures in Composite Plates

Brunswick, ME

Plate elements are common engineering structures and it is important to monitor damage evolution in these plates to ensure the integrity of the structure. Due to stress concentration in the vicinity of existing defects such as voids, inhomogeneities and surface cracks, microfracture events may occur locally in a plate highly stressed before final failure takes place. As a result, the stored strain energy radiates out in the form of elastic waves which carry information regarding the nature of the source. Due to the highly dispersive character of Lamb waves, their forms change as the disturbance propagates away from the source, and understanding the characteristics of these waves is a prerequisite to extracting source information from measured waveform.