Abstract

Characterization of barely visible impact damage (BVID) in polymer matrix composites (PMCs) is necessary to use slow crack growth damage tolerance models and evaluate remaining life of PMC components. Azimuthally scanned angled-beam pulse-echo ultrasound is investigated as a complimentary technique to normal incidence ultrasound inspection of BVID in PMCs to characterize delamination fields. It is found that there is a correlation between signals present in the azimuthally scanned angled-beam pulse-echo ultrasound C-scans and transverse cracks seen in X-ray computed tomography inspection. These transverse cracks are not readily identifiable as transverse cracks in normal incidence C-scan inspection.

References

References
1.
Babish
,
C. A.
, IV
,
2008
, “
USAF ASIP: Protecting Safety for 50 Years
,”
Proceedings of the 2008 Aircraft Structural Integrity Conference
,
San Antonio, TX
,
Dec. 2–4
.
2.
Wertz
,
J.
,
Wallentine
,
S.
,
Welter
,
J.
,
Dierken
,
J.
, and
Aldrin
,
J.
,
2017
, “
Volumetric Characterization of Delamination Fields via Angle Longitudinal Wave Ultrasound
,”
AIP Conf. Proc.
,
1806
, p.
090006
. 10.1063/1.4974650
3.
Welter
,
J. T.
,
Wertz
,
J. N.
,
Aldrin
,
J. C.
,
Kramb
,
V.
, and
Zainey
,
D.
,
2018
, “
Model-Driven Optimization of Oblique Angle Ultrasonic Inspection Parameters for Delamination Characterization
,”
AIP Conf. Proc.
,
1949
, p.
130005
.
4.
Aldrin
,
J. C.
,
Wertz
,
J. N.
,
Welter
,
J. T.
,
Wallentine
,
S.
,
Lindgren
,
E. A.
,
Kramb
,
V.
, and
Zainey
,
D.
,
2018
, “
Fundamentals of Angled-Beam Ultrasonic NDE for Potential Characterization of Hidden Regions of Impact Damage in Composites
,”
AIP Conf. Proc.
,
1949
, p.
120005
. 10.1063/1.5031592
5.
Welter
,
J. T.
,
Aldrin
,
J. C.
,
Wertz
,
J. N.
,
Kramb
,
V.
, and
Zainey
,
D.
,
2020
, “
Model Benchmarking Studies of Angle Beam Pulse-Echo Ultrasonic Inspection of Composites
,”
Mater. Eval.
,
78
(
1
), pp.
82
84
. 10.32548/2020.me-04083
6.
Welter
,
J. T.
,
Aldrin
,
J. C.
,
Wertz
,
J. N.
,
Kramb
,
V.
,
Zainey
,
D.
,
Schehl
,
N.
,
Uchic
,
M. D.
, and
Wallentine
,
S. M.
,
2019
, “
Oblique Angle Pulse Echo Ultrasound for Delamination Characterization
,”
AIP Conf. Proc.
,
2102
, p.
100001
.
7.
Van Dreumel
,
W. H. M.
, and
Speijer
,
J. L.
,
1981
, “
Non-Destructive Composite Laminate Characterization by Means of Ultrasonic Polar-Scan
,”
Mater. Eval.
,
39
(
10
), pp.
922
925
.
8.
Kersemans
,
M.
,
Martens
,
A.
,
Abeele
,
K. V. D.
,
Degrieck
,
J.
,
Zastavnik
,
F.
,
Pyl
,
L.
,
Sol
,
H.
, and
Paepegem
,
W. V.
,
2014
, “
Detection and Localization of Delaminations in Thin Carbon Fiber Reinforced Composites With the Ultrasonic Polar Scan
,”
J. Nondestr. Eval.
,
33
(
4
), pp.
522
534
. 10.1007/s10921-014-0249-5
9.
Bar-Cohen
,
Y.
, and
Crane
,
R. L.
,
1982
, “
Acoustic-Backscattering Imaging of Subcritical Flaws in Composites
,”
Mater. Eval.
,
40
(
9
), pp.
970
975
.
10.
Martin
,
R. W., and
Andrews
,
R. J.
,
1986
, “Backscatter B-scan Images of Defects in Composites,”
Review of Progress in Quantitative Nondestructive Evaluation
,
D. O.
Thompson
and
D. E.
Chimenti
, eds., Vol.
5B
,
Plenum Press
,
New York
, pp.
1189
1198
.
11.
Daniel
,
I. M.
, and
Ishai
,
O.
,
2006
,
Engineering Mechanics of Composite Materials
, 2nd ed.,
Oxford University Press
,
Oxford, UK
.
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