Research papers
5,883 papers · NASA NTRS, NTSB, FAA CAMI
NASA NTRS · 1,269 NTSB Safety Studies · 12 NTSB Aircraft Accident Reports · 17 Embry-Riddle Scholarly Commons · 1,993
13 matches · Composite Materials
- NASA NTRS 2022 GRC Accepted Manuscript (Version with final changes)
Novel Crash Sled with a Translating Support Mass
Background: A novel crash sled has been developed with a translating support, incorporating transducers that allow multiple methods of measuring energy absorption to fully characterize the dynamic crush response of compo…
- NASA NTRS 2021 LaRC Conference Paper
Progressive Damage Failure Analysis of Post-Buckled Composite Single-Stringer Panel with Teflon Inserts
The high strength-to-weight and stiffness-to-weight ratio materials, such as laminated composites, are advantageous for modern aircraft.
- NASA NTRS 2020 LaRC Conference Paper
Progressive Damage Mechanisms in Thick 3D Composite Structures under Static and Fatigue Loading
The objective of this work is to demonstrate validation of predictive capabilities capturing both damage initiation and growth under static and fatigue loading in geometrically complex three-dimensional (3D) composite st…
- NASA NTRS 2019 GRC Presentation
CMAS Interactions with Advanced Environmental Barrier Coatings Deposited via Plasma Spray- Physical Vapor Deposition
Materials for advanced turbine engines are expected to have temperature capabilities in the range of 1370-1500C. At these temperatures the ingestion of sand and dust particulate can result in the formation of corrosive g…
- NASA NTRS 2019 MSFC Presentation
Damage Tolerance of Composite Laminates from an Empirical Perspective
This slide presentation reviews the damage tolerance for composite laminates. It includes information surrounding observations on impact testing, laminate damage threshold, and fatigue.
- NASA NTRS 2019 CDMS Contractor Report (CR)
Damage progression in Composite Structures
A computational simulation tool is used to evaluate the various stages of damage progression in composite materials during Iosipescu sheat testing.
- NASA NTRS 2019 GRC Presentation
Analysis and Testing of a Composite Fuselage Shield for Open Rotor Engine Blade-Out Protection
The Federal Aviation Administration is working with the European Aviation Safety Agency to determine the certification base for proposed new engines that would not have a containment structure on large commercial aircraf…
- NASA NTRS 2019 GRC Technical Memorandum (TM)
Investigation of Micro-Scale Architectural Effects on Damage of Composites
This paper presents a three-dimensional, energy based, anisotropic, stiffness reduction, progressive damage model for composite materials and composite material constituents.
- NASA NTRS 2019 CDMS Conference Paper
Certification of damage tolerant composite structure
A reliability based certification testing methodology for impact damage tolerant composite structure was developed. Cocured, adhesively bonded, and impact damaged composite static strength and fatigue life data were stat…
- NASA NTRS 2016 CDMS Conference Paper
Tensile strength of composite sheets with unidirectional stringers and crack-like damage
The damage tolerance characteristics of metal tension panels with riveted and bonded stringers are well known. The stringers arrest unstable cracks and retard propagation of fatigue cracks.
- NASA NTRS 2016 CDMS Conference Paper
Comparison of toughened composite laminates using NASA standard damage tolerance tests
The proposed application of composite materials to transport wing and fuselage structures prompted the search for tougher materials having improved resistance to impact damage and delamination.
- NASA NTRS 2013 CDMS Conference Paper
Impact damage in composite laminates
Damage tolerance requirements have become an important consideration in the design and fabrication of composite structural components for modern aircraft.
- NASA NTRS 2011 CDMS Conference Paper
Damage tolerance research on composite compression panels
The damage tolerance of composites was investigated. Results show that severe degradation in material strength may occur due to impact damage and that reduced strain allowables should be considered to compensate for poss…