Representative examples of issues that may require specialized investigation.
Question: material, manufacturing, tightening, aging or installation conditions?
Approach: fracture examination, fractography, polymer characterization and service-context review.
Question: did stress combined with chemical exposure contribute to cracking?
Approach: crack morphology, material identification and review of plausible environmental agents.
Question: adhesion, surface preparation, material or aging?
Approach: interface examination, chemical characterization and affected/intact area comparison.
Question: material defect, manufacturing, design or service loading?
Approach: documentation, targeted analysis, reference comparison and mechanism interpretation.