Location

La Jolla, CA

Start Date

1-1-1987 12:00 AM

Description

In the study of elastic-plastic fracture mechanisms it is necessary to determine accurately the time and location history of crack initiation and to discriminate between the fracture mechanisms of ductile and brittle rupture. In order to accomplish this, a real-time digital acquisition system for analysis of acoustic emissions has been configured, and some preliminary results are described in this paper. The goals for this system are to locate crack initiation sites with an accuracy of 200 μm or better and to respond to events separated in time by less than 100 ms.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

6A

Chapter

Chapter 1: General Techniques—Fundamentals

Section

Acoustic Emission

Pages

345-351

DOI

10.1007/978-1-4613-1893-4_40

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Digital Acquisition and Analysis of Acoustic Emission Signals for Crack Site Initiation Studies

La Jolla, CA

In the study of elastic-plastic fracture mechanisms it is necessary to determine accurately the time and location history of crack initiation and to discriminate between the fracture mechanisms of ductile and brittle rupture. In order to accomplish this, a real-time digital acquisition system for analysis of acoustic emissions has been configured, and some preliminary results are described in this paper. The goals for this system are to locate crack initiation sites with an accuracy of 200 μm or better and to respond to events separated in time by less than 100 ms.