Evaluation of Bond Testing Equipment for Inspection of Army Advanced Composite Airframe Structures

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Abstract:

Forty-one ultrasonic bond testing instruments for nondestructive inspection of composite airframe structures were evaluated based on information available in the literature. In addition, three of these instruments,the Fokker Bond-tester Model 80-L, the BondaScope 2100, and the Sonatest UFD-S, were evaluated in the laboratory using ten specimens of composite airframe structures supplied by the Army. All the specimens had unknown flaw conditions. Both the Fokker Bondtester and the BondaScope required only a few hours of operator training in calibration and operation. Both instruments require a liquid couplant and are used for spot checking. The UFD-S instrument was difficult to set up and calibrate without reference samples of known characteristics. Also, extensive operator training is required to calibrate and operate the UFD-S instrument. The UFD-S uses a wheel probe which does not require a liquid couplant and allows continuous scanning of the specimen. Keywords Adhesives, Bonding, Nondestructive testing, Composite materials, Aircraft, Acoustic impedance, Shadow technique, Resonance, Ultrasonics.

Author(s):
Kwun, Hegeon ; Alcazar, David G.
Author Organization(s):
SOUTHWEST RESEARCH INST SAN ANTONIO TX
Descriptive Note:
Final rept. 1 Jul 1987-12 Feb 1988
Pagination:
0048

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
MTL-TR-88-28
Contract/Grant Number(s):
DLA900-84-C-0910
Monitor Series:
TR-88-28, MTL
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_5.3.3_Develop Strategy; JCA_5.3.4_Develop Courses of Action; JCA_5.3.5_Analyze Courses of Action; JCA_5.2_Understand; JCA_6_Net Centric; JCA_1_Force Support; JCA_1.2_Force Preparation; JCA_6.1.2_Wireless Transmission; JCA_6.1_Information Transport; JCA_1.2.1_Training; JCA_1.2.5_Lessons Learned; JCA_3.2_Engagement; JCA_3_Force Application; JCA_4.3_Maintain; JCA_3.2.1_Kinetic Means; JCA_4.6_Engineering; JCA_6.4.1_Secure Information Exchange
Modernization Areas:
Microelectronics; Space
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*COMPOSITE MATERIALS, *NONDESTRUCTIVE TESTING, *AIRFRAMES, TRAINING, COMPOSITE STRUCTURES, TEST EQUIPMENT, TIME, DEFECTS(MATERIALS), ULTRASONICS, WHEELS, INSPECTION, SAMPLING, BONDING, CALIBRATION, OPERATORS(PERSONNEL), ADHESIVES, SHADOWS, AIRCRAFT, ACOUSTIC IMPEDANCE, SCANNING, PROBES
Field(s)/Group(s):
Aircraft, Laminates and Composite Materials, Test Facilities, Equipment and Methods
Keyword(s):
LPN SWRI 17 7958 836
Report Date:
1988 Oct 01