SAMPE Journal - May/June 2020 - 10
FEATURE
Bonded Joints
Testing and Analysis Correlation of Composite
Sandwich Longitudinal Bonded Joints for
Space Launch Vehicle Structures
David W. Sleight, Arunkumar Satyanarayana, Brian H. Mason
NASA Langley Research Center, Hampton, VA
Babak Farrokh, and Kenneth Segal
NASA Goddard Space Flight Center, Greenbelt, MD
ABSTRACT
T
he NASA Composite Technology for Exploration (CTE) Project has been developing and demonstrating
critical composite technologies with a focus on joints; incorporating materials, design/analysis,
manufacturing, and tests that utilize NASA expertise and capabilities. The CTE project has focused on the
development of composite longitudinal bonded joint technologies for conical structures such as the SLS
Payload Attach Fitting (PAF) due to challenging joint geometries and loads compared to cylindrical jointed
structures. The CTE team selected and designed a double-lap composite bonded joint as the most advantageous
longitudinal joint to advance for the CTE project. This paper reports on the longitudinal bonded joint subelement test articles that were fabricated and tested for several loading conditions to test the capability of the
bonded joint design. Test and analysis correlation to the sub-element test articles are presented in the paper.
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SAMPE Journal - May/June 2020
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