Development of a database of pipe fracture experiments

Scott, Paul; Wilkowski, G.; Sturm, D.; Stoppler, W.

doi:10.1016/0029-5493(94)90181-3

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…As such, the EU courts acting as 'catalysts', creating and prompting 'occasions for normatively motived and accountable inquiry and remediation by actors involved in new governance processes' seems unlikely. 162…”

Section: Eu Jurisprudence On Guidance Joanne Scott and Davidmentioning

confidence: 99%

Differentiation and Dysfunction: An Exploration of Post-Legislative Guidance Practices in 14 EU Agencies

Vaughan

2015

Camb. Yearb. Eur. Legal Stud.

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This paper offers up a map of self-authored post-legislative guidance practice among the EU's decentralised agencies. It shows that the use of guidance by EU agencies is widespread and significant, but not pervasive in that 14 of the EU's 33 agencies currently engage in guidance-making. Where guidance is produced, it varies significantly between and within agencies as regards volume and length. These documents are hard to find, they are called a miscellany of different things, and there seems to have sprung up, ad hoc, a hierarchy of guidance that is both interesting and lacking in clarity. The question as to whether such guidance binds those to whom it has been addressed has been fudged, with agencies and courts engaging in exercises of tautology and misdirection to avoid the appearance of anything that looks like binding norm-making by the EU's agencies. Consultation and participation in the making of guidance seems lackadaisical. This map suggests a level of differentiation that is so ill-thought out, and so ad hoc, so lacking in foresight and oversight, as to be dysfunctional. At the same time, the lack of engagement by the EU courts with these norms suggests that the site of opportunity for a way forward in this area lies other than with the judiciary.

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Section: Eu Jurisprudence On Guidance Joanne Scott and Davidmentioning

confidence: 99%

Differentiation and Dysfunction: An Exploration of Post-Legislative Guidance Practices in 14 EU Agencies

Vaughan

2015

Camb. Yearb. Eur. Legal Stud.

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“…These equations assume that the circumferential crack length, 2θ, is above the neutral axis location (β) in Figure 3-63. The NSC equations and flow stress definition have been validated by hundreds of pipe tests on tougher nuclear piping steels [95] where over 300 circumferentially cracked pipe tests were examined first. The pipes were screened to ensure the toughness was high enough that limit-load should be satisfied, and the statistical relationship of the actual material strengths (yield and ultimate) at the pipe test temperature were related to the flow stress calculated for the qualifying pipe tests.…”

Section: Limit-load Analysismentioning

confidence: 99%

Advanced Integration in Multi-Scale Mechanics and Welding Process Simulation in Weld Integrity Assessment

Wilkowski¹,

W²,

Babu³

2008

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“…The original "fracture initiation" criteria developed by Maxey/Kiefner (1) for axial through-wall and surface cracks have worked well for many industries for a large variety of materials, i.e., Grade B to X70 line pipe (2) , nuclear piping materials (3,4) , cryogenic piping materials (5) , etc. However, newer line-pipe steels have some unusual characteristics that differ from these older materials.…”

Section: Introductionmentioning

confidence: 99%

Applicability of Existing Fracture Initiation Models to Modern Line Pipe Steels

Shim¹

2016

Transactions of the Korean Society of Pressure Vessels and Pipi

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The original fracture criteria developed by Maxey/Kiefner for axial through-wall and surface-cracked pipes have worked well for many industries for a large variety of relatively low strength and toughness materials. However, newer line pipe steels have some unusual characteristics that differ from these older materials. One example is a test data that has demonstrated that X80 line-pipe with an axial through-wall-crack can fail at pressures about 30 percent lower than predicted with commonly used analysis methods for older steels. Thus, it is essential to review the currently available models and investigate the applicability of these models to newer high-strength line pipe materials. In this paper, the available models for predicting the failure behavior of axial-cracked pipes (through-wall-cracked and external surface-cracked pipes) were reviewed. Furthermore, the applicability of these models to high-strength steel pipes was investigated by analyzing limited full-scale pipe fracture initiation test results. Based on the analyzed results, the shortcomings of the available models were identified. For both through-wall and surface cracks, the major shortcomings were related to the characterization of the material toughness, which generally leads to non-conservative predictions in the J-T analyses. The findings in this paper may be limited to the test data that were consider for this study. The requisite characteristics of a potential model were also identified in the present paper.

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Development of a database of pipe fracture experiments

Cited by 3 publications

References 2 publications

Differentiation and Dysfunction: An Exploration of Post-Legislative Guidance Practices in 14 EU Agencies

Differentiation and Dysfunction: An Exploration of Post-Legislative Guidance Practices in 14 EU Agencies

Advanced Integration in Multi-Scale Mechanics and Welding Process Simulation in Weld Integrity Assessment

Applicability of Existing Fracture Initiation Models to Modern Line Pipe Steels

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