Composite Failure Analysis & Damage Assessment
Diagnose composite failures with structured root cause analysis
What You Can Do
This skill systematically analyzes composite material failures by walking you through evidence-based failure diagnosis methodology. You'll identify root causes, characterize damage patterns, and receive specific corrective and preventive actions tailored to your failure scenario.
Features
Systematically narrows failure mechanisms using failure mode trees, evidence evaluation, and composite mechanics validation
Classifies failure types (matrix cracking, delamination, fiber breakage, environmental degradation) with severity assessment and location mapping
Provides step-by-step protocols for documenting damage patterns, measurements, discoloration, and progression over time
Evaluates combined impact of temperature cycling, moisture absorption, UV exposure, chemical attack, and mechanical loading
Generates ranked recommendations: immediate containment, design modifications, manufacturing adjustments, and material upgrades
Cross-checks suspected root cause against material properties, loading history, and composite failure physics
Structured format for recording findings, visual evidence, analysis rationale, and recommendations for quality records
Creates actionable design, manufacturing, and maintenance steps to prevent recurrence in future production or service
Example Output
Example 1: Delamination Report
Root Cause: Hygroscopic swelling + thermal cycling → matrix microcracking → ply separation
Evidence: White stress marks in matrix, progressive damage over 6 months in humid tropical environment
Recommendation: Upgrade to low-moisture-absorption epoxy resin system; redesign layup to increase interlaminar toughness
Immediate Action: Reduce service temperature 5°C; implement moisture-controlled storage
Preventive Measures: Add surface moisture barrier coating; reduce service humidity exposure to <80% RH
Example 2: Impact Damage Assessment
Damage Classification: Impact-induced matrix crushing with incipient delamination
Extent: 25mm diameter impact zone, 12mm penetration depth, delamination halo ~40mm
Repair Decision: Repair recommended (damage below critical threshold); monitor for progression
Design Changes: Increase local ply thickness 20%; add impact containment ribs; switch to toughened epoxy
Manufacturing Fix: Implement in-process surface protection during assembly
Example 3: Manufacturing Defect
Root Cause: Insufficient fiber wet-out during resin infusion → voids in matrix → stress concentration
Failing Rate: 8% of production batch; localized to rib-flange junction
Immediate Action: Reduce infusion pressure profile; increase vacuum dwell time
Process Change: Add post-cure inspection checkpoint; verify fiber wet-out with ultrasonic scan
Recovery: Revised process reduces defect rate to <1%
What's Included
- SKILL.md file with composite failure diagnosis workflows and decision trees:
- Root-cause failure mode analysis framework (fishbone, FTA, FMEA templates):
- Visual damage inspection and documentation checklist:
- Environmental degradation mechanism guide (moisture ingress, UV, thermal cycling, stress corrosion):
- Failure hypothesis testing protocol with validation criteria:
- Corrective action prioritization matrix (severity vs. feasibility):
- Material property reference (carbon, glass, aramid composites; common resin systems):
- Composite mechanics quick reference (failure stresses, Tsai-Hill criterion, interlaminar strength):
- Preventive measures and design modification checklist:
- Sample failure report template with findings, analysis, and recommendations:
Who It's For
- Materials engineers and composite failure specialists diagnosing in-service failures
- Design engineers conducting post-mortem analysis and corrective redesign
- Manufacturing engineers investigating production defects and quality excursions
- Quality assurance and reliability engineers evaluating component fitness-for-service
- Aerospace, automotive, marine, and wind energy engineers managing composite structural integrity
Best For
- Root cause diagnosis of composite failures (delamination, matrix cracking, fiber breakage, environmental degradation)
- Damage assessment reports for impact, fatigue, or chemical-environmental failures
- Production defect investigation and process correction planning
- Design corrective action planning to prevent future field failures
- Fitness-for-service and repair-vs.-replace decision making
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