Zobrazeno 1 - 10
of 141
pro vyhledávání: '"G.M. Wilkowski"'
Publikováno v:
Journal of Pressure Vessel Technology. 120:418-423
In the spirit of GE/EPRI fracture mechanics procedure, estimation schemes for the crack driving force for circumferentially and axially surface-cracked pressurized elbows subjected to bending are developed. These schemes are based on the results of l
Publikováno v:
International Journal of Pressure Vessels and Piping. 75:375-396
This is the second paper in a series of three papers generated from a recent study on crack-opening-area analysis of circumferentially cracked pipes for leak-before-break applications. This paper (Part II—Model Validations) focuses on the evaluatio
Publikováno v:
International Journal of Pressure Vessels and Piping. 75:397-415
This is the third of three papers generated from a recent study on crack-opening-area analysis of circumferentially cracked pipes for leak-before-break applications. The first two papers [1, 2] [Rahman, S., Brust, F. W., Ghadiali, N. and Wilkowski, G
Publikováno v:
International Journal of Pressure Vessels and Piping. 75:357-373
Leak-before-break (LBB) analyses for circumferentially cracked pipes are currently being conducted in the nuclear industry to justify elimination of pipe whip restraints and jet impingement shields which are present because of the expected dynamic ef
Publikováno v:
Nuclear Engineering and Design. 168:105-118
This paper presents some results from an ORNL cyclic pipe experiment that demonstrated the magnitude of low-cycle fatigue crack growth from simulated seismic loading. The concern with this result is that current pipe flaw evaluation procedures do not
Publikováno v:
International Journal of Pressure Vessels and Piping. 70:209-221
This paper describes the development of a computer code entitled PSQUIRT for probabilistic evaluations of leak rate in nuclear piping. It is based on (1) the Henry-Fauske model of two-phase flow for thermal-hydraulic analysis and (2) an estimation mo
Publikováno v:
Nuclear Engineering and Design. 167:55-67
Current models for the crack-opening-area analysis of pipes with circumferential through-wall cracks are based on various idealizations or assumptions which are often necessary to simplify the mathematical formulation and numerical calculation. This
Publikováno v:
Nuclear Engineering and Design. 160:77-96
The objective of this paper is to verify the ability of current fracture analysis methods to predict loads and displacement for circumferential, through-wall-cracked, stainless steel, flux-welded (i.e. submerged-arc weld and shielded-metal-arc weld)
Publikováno v:
International Journal of Pressure Vessels and Piping. 62:49-58
Material property tests were conducted on nuclear piping steels at 288°C at both quasi-static and dynamic displacement rates. The dynamic rates were similar to those estimated to occur in pipe tests that simulate seismic loading. The results suggest
Publikováno v:
Nuclear Engineering and Design. 151:425-448
A post-calculation by means of four engineering approaches, based on toughness, yield stress, plastic instability and ligament stress criteria, was made of the failure pressure on 134 pipes and vessels. The calculation was assessed by comparing the c