Event Title
Location
Brunswick, ME
Start Date
1-1-1992 12:00 AM
Description
A quantitative thermographie NDE technique for the characterization of impact damage in composite materials is under development along with supporting theoretical analysis. We have previously shown that the technique of time-resolved infrared radiometry (TRIR) is an effective method for quantitatively detecting coating thickness variations and for characterizing the degree of coating disbonding in terms of equivalent air gaps [1,2]. Here we extend the TRIR technique to the study of composite systems by applying the results of a multilayer analytical model [3]. Experimental results in both simple and hybrid composite systems are discussed. The depth and lateral extent of interlaminar separation in composites subjected to impact loading is presented and the use of lateral heat flow techniques to image defect structures is examined.
Book Title
Review of Progress in Quantitative Nondestructive Evaluation
Volume
11A
Chapter
Chapter 1: Fundamentals of Standard Techniques
Section
Thermal Techniques
Pages
433-440
DOI
10.1007/978-1-4615-3344-3_54
Copyright Owner
Springer-Verlag US
Copyright Date
January 1992
Language
en
File Format
application/pdf
Time-Resolved Infrared Radiometry (Trir) for Characterization of Impact Damage in Composite Materials
Brunswick, ME
A quantitative thermographie NDE technique for the characterization of impact damage in composite materials is under development along with supporting theoretical analysis. We have previously shown that the technique of time-resolved infrared radiometry (TRIR) is an effective method for quantitatively detecting coating thickness variations and for characterizing the degree of coating disbonding in terms of equivalent air gaps [1,2]. Here we extend the TRIR technique to the study of composite systems by applying the results of a multilayer analytical model [3]. Experimental results in both simple and hybrid composite systems are discussed. The depth and lateral extent of interlaminar separation in composites subjected to impact loading is presented and the use of lateral heat flow techniques to image defect structures is examined.
