In this investigation, Structure Integrity Assessment Procedure (SINTAP) which is internationally and the most influential safety assessment standard was applied to assessment for welded joints of the API 5L X65 pipeline steel with embedded flaw and surface flaw at the weld toe.
Structure Integrity Assessment Procedure (SINTAP)-Failure Assessment Diagram (FAD) method was applied to the SAF2205 pipe mismatch welded joints with surface flaw (The height and length are 1.1 mm and 2.5 mm respectively) at the weld toe.
According to the CTOD (Crack Tip Opening Displacement) test result and using the BS7910 produced by the British Standards Institution and the SINTAP (Structural Integrity Assessment Procedure) sponsored by the European Commission, given crack size and load, the assessment was carried out on surface flaw at the toe of weld in EH36 pipeline.
The relationship between medial crack length and normal loading was also investigated when specimens were indented by symmetrical wedges with interior angles of 30°-120°.
Crack fault quantitative diagnosis based on finite element of B-spline wavelet on the interval
The model-based forward and inverse problems in the diagnosis of structural crack faults were studied.
The forward problem is to solve the natural frequencies through a cracked structural model and the inverse problem is to quantitatively determine the crack parameters using the experimental testing frequencies.
Then, the one-dimensional crack element of B-spline wavelet on the interval (BSWI) was built to solve the forward problem.
In addition, thermal cracking, thermal oxidization, carbonization and cyclization of organic substances on the surface of brake block can make the friction surface produce pores or cracks, thus fatigue wear occurs.
Study on reformulation of fluid catalytic cracking gasoline and increasing production of light olefins
Formation of coke in thermal cracking of jet fuel under supercritical conditions
Continuous-flow reactor experiments were carried out to study coke formation from thermal cracking of home-made jet fuel RP-3 under supercritical conditions.
The starting cracking temperature of RP-3 fuel was determined to be 471.8°C by differential scanning calorimetry (DSC).