What failure criteria are used for pressure vessels, boilers, lifting machinery, and elevators in our country respectively?
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1. Elastic failure 2. Plastic failure 3. Blasting failure. Which type of failure applies to pressure vessels, boilers, lifting machinery, and elevators respectively?
The primary failure modes considered for pressure vessels are fracture, leakage, excessive deformation, and instability； Common failure modes of boilers include: wear, corrosion, bending, deformation, cracks, fatigue, bulging, overheating, tube rupture, damage, creep, bulges, scratches, leakage, and caustic embrittlement ； The main failure modes of lifting machinery are: wear, deformation, fracture, and corrosion ； The failure modes of elevators are: mechanical damage (such as cracking, deformation), abnormal wear, rusting, material aging, electrical faults, and damaged electrical components