Fracture Control Endorsement

[Certification Overview]

The Fracture Control Endorsement is an additional AISC certification for structural projects with extremely high requirements for toughness and welding reliability (e.g., bridges, oil and gas equipment, hydraulic systems). It aims to ensures enterprises possess comprehensive technical capabilities to prevent cracks and control fracture origins.

[Applicable Enterprises]

• Bridge steel structure manufacturers.

• Projects requiring compliance with American fracture toughness control standards.

• Suppliers implementing AASHTO or DOT standards.

[Certification Scope and Content]

• Material requirements for fracture control (e.g., CVN impact toughness testing).

• Precision welding procedure qualification (WPS supporting low-hydrogen processes like FCAW and SAW).

• Advanced NDT inspection processes (e.g., ultrasonic, RT) and personnel qualification control.

• Structural detail control for crack-sensitive areas (e.g., avoiding high stress concentration).

• Safety design assurance for structural components under extreme climates and dynamic loading conditions.

[Key Certification Process Steps]

• Submit fracture control design and manufacturing process documentation.

• Ensure materials and welding processes comply with American standards (e.g., ASTM A709 Gr. 50W).

• Personnel must hold relevant CWI/NDT qualifications.

• Endorsement by AISC auditors and recorded as an addendum to the main certificate.

[Certification Value]

• Enhances quality and safety credibility for large-scale structural projects.

• Meets essential requirements for North American bridge/high-grade structural specifications.

• Improves eligibility for participating in public projects and government procurement contracts.