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ASTM Selected Technical Papers
Composite Materials: Testing and Design (Third Conference)
By
CA Berg
CA Berg
coordinator
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FJ McGarry
FJ McGarry
coordinator
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SY Elliott
SY Elliott
1
Douglas Aircraft Company
,
Long Beach, Calif. 90846
;
symposium chairman
.
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ISBN-10:
0-8031-0308-5
ISBN:
978-0-8031-0308-5
No. of Pages:
683
Publisher:
ASTM International
Publication date:
1974

The increasing use of composites for primary structural applications in advanced aircraft has necessitated the development of environmental protective systems. Since lightning strikes to boron/epoxy structural systems can cause catastrophic damage, the Air Force Materials Laboratory initiated a program [1]2 to evaluate and optimize a low-weight lightning protection system to protect boron/epoxy composite, full-depth honeycomb structure for advanced fighter aircraft. This paper summarizes the studies and major achievements of this program and includes results of the weight optimization studies and demonstration tests on large subcomponent beams (simulating advanced fighter empennage structure) and a flight-worthy composite component.

1.
Advanced Development on Vulnerability/Survivability of Advanced Composite Structures
,” AFML Contract F33615-71-C-1414,
McDonnell Aircraft Company
, 15 March, 1971.
2.
Schwartz
,
H. S.
and
Austin
,
C. R.
, “
Effects of Lightning Strikes on Fiber-Reinforced Structural Plastic Composites
,” Technical Report AFML-TR-68-196,
09
1968
.
3.
Kelly
,
L. G.
and
Schwartz
,
H. S.
, “
Investigation of Lightning Strike Damage to Epoxy Laminates Reinforced with Boron and High Modulus Graphite Fibers
,” Lightning and Static Electricity Conference, 3–5 Dec. 1968, in Technical Report AFAL-TR-68-290, Part 2, p. 485.
4.
Kung
,
J. T.
, “
Lightning Protection of Advanced Composite Aircraft Structure
,”
Douglas Aircraft Co.
Report MDC J5002,
12
1970
.
5.
Penton
,
A. P.
,
Perry
J. L.
, and
Lloyd
,
K.
, “
The Effects of High Intensity Electrical Currents on Advanced Composite Materials
,”
Philco Ford Corp
. Report No. U-4866,
09
1970
.
6.
Quinlivan
,
J.
,
Kuo
,
C.
, and
Brick
,
R.
, “
Coatings for Lightning Protection of Structural Reinforced Plastics
,” AFML-TR-70-303,
03
1971
, Part 1.
7.
Schulte
,
E. H.
and
Clifford
,
D. W.
, “
Response of Boron/Epoxy Composite Materials to Simulated Lightning Current
,” SAMPE 4th National Technical Conference, 17–20 Oct. 1972.
8.
Gehring
,
R. W.
,
Matoi
,
T. T.
, and
Hughes
,
E. J.
, “
Evaluation of Environmental and Service Conditions on Filamentary Reinforced Composite Structural Joints and Attachments
,” Technical Report AFML-TR-71-194, Vol.
1
,
11
1971
.
9.
Quality Assurance for Advanced Composite Structures
,” AFML Contract F33615-71-C-1359,
McDonnell Aircraft Company
,
01
03
1971
.
10.
Schulte
,
E. H.
, “
Lightning Simulation–Testing of Composite Materials
,” IES 19th Annual Meeting, 1–5 April 1973.
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