Composites Damage Tolerance - NASA
Composites Damage ToleranceMSFC EEngineeringiiDamage ToleranceAAssessmentt BranchBhWayne Gregg/EM20September 2008September,www.nasa.gov
Composites Damage Tolerance Constellation Requirements for Fracture Control MSFC-RQMT-3479 Background & Development Approach Examples of Criteria & ImplementationMSFC DT/EM202
Composites Damage ToleranceHow does damage tolerance of composites fit within the framework of Constellation requirements?Constellation ProgramLevel II 6)MechanismsEtc BatteriesEtc Fracture 79MSFC DT/EM203
Composites Damage ToleranceMSFC- RQMT-3479 Background & Development Approach Began development of composite fracture control requirements to address shortcomings of priorrequirements Prior requirements were limited in scope to proof testing, manufacturing history, and NDE Developed in conjunction with members of the NASA Fracture Control Methodology Panel during2004 – 2006 Significant fracture community involvement ( 115 comments addressed) prior to final versionpublication Adopted Agency effort into a MSFC Requirements Document, June 2006 NASA Fracture Control Methodology Panel agreed in 2006 that NASA-STD-5019 would referto MSFC-RQMT-3479 for fracture control of composites Cast requirementsqin the framework and languageg g of existingg NASA fracture control requirements.q Review other requirements in addition to NASA requirements: Aircraft – Military – Joint Services Specification Guide (JSSG) 2006 Aircraft – Civil – FARs/MIL-HDBK-17F General literature RelyR l on ANSI/AIAA SS-081081 ffor COPVCOPVs. Refer to MIL-HDBK-17F (now CMH-17) for specific methodologies. Further Development Efforts to revise NASA-STD-5019(A) are underway to include MSFC-RQMT-3479requirements and to update with lessons learned from Orion and Ares effortsMSFC DT/EM204
Composites Damage ToleranceMSFC DT/EM205
Composites Damage ToleranceExamples of MSFC-RQMT-3479 Criteria & ImplementationMSFC DT/EM206
Composites Damage ToleranceMSFC DT/EM207
Composites Damage ToleranceMSFC DT/EM208
Composites Damage ToleranceSteps in Establishing Damage ToleranceDesign Concept and RequirementsDamage ThreatAssessmentImpact DamageProtection PlanFlight Hardware· Implement Damage Protection Plan· NDE Flight Parts· Proof Test Flight Article· Post Proof NDE of Flight Article· In-Service InspectionsFailPassDamage TolerantCoupon TestsHardware DesignDamage TolerantDevelopment TestFailDamage Tolerant FullScale Component TestsAnalytical SupportDamage Tolerant Full-Scale Component TestDesignUltimate LoadT tTestI dInduceFlFlaws perSection 5.3.2.6 1 Lifetime TestDesignLimit LoadT tTest1 Lifetime Test1 Lifetime Test1 Lifetime Test No flaw initiation allowedFull NDEFull NDENo flaw growth allowedNo flaw initiation allowedMSFC DT/EM20Full NDEFull NDEDemonstrate by test(s) that there is no catastrophic failure due to flawsduring (or following if appropriate) the design limit load test, and thatthe component performs as structurally and mechanically intended: no structural failure, burst, etc. no catastrophic leak due to flaws no catastrophic mechanical malfunction structurally and mechanically peforms design function9
Composites Damage Tolerance Certification Examples:Fatigue & Strength Tests with DamageMSFC DT/EM2010
Composites Damage ToleranceImplementation Example: Ares I Upper Stage Composites InterstageCoupon TestsMSFC DT/EM2011
Composites Damage ToleranceImplementation Example: Ares I Upper Stage Composites InterstageMSFC DT/EM2012
Design Limit Load Id Fl Tt Ultimate Load Tt Test 1 Lifetime Test 1 Lifetime Test 1 Lifetime Test 1 Lifetime Test Induce Flaws per Section 5.3.2.6 Test No flaw initiation allowed MSFC DT/EM20 9 Demonstrate by test(s) that there is no catastrophic failure due to flaws during (or following if appropriate) the design limit .
Literature on Tolerance Design The relationship between the functional requirements and entities of the mechanical part can be derived and expressed as F 1 ¼ fðE 1;E 2;.;E nÞ. Tolerance design consists of tolerance analysis and tolerance synthesis. In tolerance analysis, the goal is to ensure the tolerance of functional require-
5 NATURAL FIbRE-SYNThETIC poLYMER CoMpoSITES 28 5.1 Wood Plastic Composites 29 5.2 Natural Fibre Injection Moulding Compounds 30 5.3 Non-Woven Natural Fibre Mat Composites 32 5.4 Aligned Natural Fibre-Reinforced Composites 33 6 FULLY bIo-bASEd CoMpoSITES 34 6.1 Natural Fibre-Bio-based Polymer .
5. Design tolerance practice 11 5.1 Variables affected by the tolerance design method 11 5.2 How generic tolerance engineering practice is applied 12 5.3 Thoughts on how tolerance design practices can be altered 14 5.4 Comparison to theoretical models 15 5.5 Evaluation of tolerance design practices 17 6. Conclusion 22 7. References 24
2016 nasa 0 29 nasa-std-8739.4 rev a cha workmanship standard for crimping, interconnecting cables, harnesses, and wiring 2016 nasa 0 30 nasa-hdbk-4008 w/chg 1 programmable logic devices (pld) handbook 2016 nasa 0 31 nasa-std-6016 rev a standard materials and processes requirements for spacecraft 2016 nasa 0 32
The following tutorial aims at guiding you when you open the CATIA Composites Design workbench for the first time. It provides 3 step-by-step tasks for: Entering the Composites Design Workbench Defining the Composites Parameters This tutorial should take about 5 minutes t
The Essential Guide to Cargo Damage 3 Table of Contents Preface 4 Chapter 1 – Introduction 6 Chapter 2 –Types of damages 8 2.1 – Physical Damage 10 2.2 – Reasons for Physical Damage 11 2.3 – Wet Damage 16 2.4 – Reasons for Wet Damage 17 2.5 – Contamination Damage 19 2.6 – Reasons for Contamination Damage 20 2.7 – Reefer related Damage 21
the vehicle. Durability and damage tolerance design and certification requirements are addressed for commercial transport aircraft and NASA manned spacecraft systems. The state-of-the-art in advanced design and analysis methods is illustrated by discussing the results of several recently completed NASA technology development programs.
Jan 10, 2012 · The NASA STI program provides access to the NASA Aeronautics and Space Database and its public interface, the NASA Technical Report Server, thus providing one of the largest collections of aeronautical and space science STI in the world. Results are published in both non-NASA channels and by NASA in the NASA
