ASME STP-PT-071-2014 PDF

Full title and description

Stress Intensity Factor Solutions for Internal Cracks in Thick‑Walled Cylinder Vessels — a technical report that presents analysis methods and tabulated/graphical solutions for stress intensity factor (K) for internal surface cracks in thick‑walled cylinders, intended to support fracture‑mechanics assessments, design‑by‑analysis and fitness‑for‑service evaluations for cylindrical pressure‑containing components.

Abstract

This report documents analytical and numerical solutions for stress intensity factors (K) for representative internal‑surface crack geometries in thick‑walled cylinders. It provides solution methods, validated numerical results, and K‑factor tables/plots for a range of geometry and loading conditions to enable fracture mechanics assessments of internal flaws in cylindrical pressure vessels and similar components.

General information

• Status: Active / current technical report (ASME STP product).
• Publication date: 2014.
• Publisher: ASME (The American Society of Mechanical Engineers).
• ICS / categories: Mechanical engineering — fracture mechanics, pressure vessels, stress analysis.
• Edition / version: STP‑PT‑071 (2014).
• Number of pages: 182 pages (report length as published in 2014).

Scope

The report develops and presents stress intensity factor (K) solutions for internal surface cracks in thick‑walled cylindrical vessels over a practical range of geometry ratios, crack depths and loading modes relevant to pressure vessels and piping. Its scope includes formulation of the problem, numerical solution approaches, validation of results, and presentation of tables/plots and usability notes for applying K‑solutions in fracture‑mechanics assessments and fitness‑for‑service evaluations.

Key topics and requirements

• Definition and classification of internal surface crack geometries in thick‑walled cylinders.
• Analytical and numerical methods used to compute stress intensity factors (K) for Mode I (and relevant mixed‑mode) loading.
• Tabulated K‑factor solutions and graphical representations across geometry and loading parameter ranges.
• Validation and comparison of numerical solutions (mesh/convergence and benchmark checks).
• Guidance on applying K‑solutions to fracture‑mechanics assessments, flaw acceptance, and remaining‑life evaluations.
• Examples or illustrative cases for using the tables/plots in practical assessments.

Typical use and users

Used by pressure‑vessel and piping design engineers, fitness‑for‑service and fracture‑mechanics analysts, inspection and integrity engineers, researchers, and code/committee members when assessing internal surface flaws in thick‑walled cylindrical components and when performing K‑based fracture assessments or design‑by‑analysis evaluations.

Related standards

Relevant companion standards and documents include ASME code and design guidance used for pressure‑containing equipment (Section I, Section VIII and associated ASME/industry fitness‑for‑service guidance), and related STP reports on K‑factors and fracture mechanics for pipes and cylinders (for example other STP‑PT series reports published in 2014). These related STP products provide broader context and complementary K‑solutions for different geometries and components.

Keywords

stress intensity factor; K‑factor; fracture mechanics; internal surface crack; thick‑walled cylinder; pressure vessel; flaw assessment; fitness‑for‑service; ASME STP‑PT‑071; K solutions.

FAQ

Q: What is this standard?

A: It is an ASME STP technical report (STP‑PT‑071, 2014) that provides stress intensity factor solutions for internal surface cracks in thick‑walled cylindrical vessels to support fracture‑mechanics assessments and design‑by‑analysis applications.

Q: What does it cover?

A: It covers formulation and computation of K‑solutions for representative internal crack geometries in thick‑walled cylinders, presents validated numerical results, and supplies tables/plots and user guidance for applying those solutions in engineering assessments.

Q: Who typically uses it?

A: Pressure vessel and piping design engineers, fracture‑mechanics analysts, inspection/integrity engineers, researchers and code committee members who need K‑factor data for internal cracks in cylindrical components.

Q: Is it current or superseded?

A: The publication date is 2014; the document is distributed as an ASME STP technical report and is listed as active in commercial catalog listings. Users should verify any later reaffirmations or revisions with ASME for current status before relying on it for code compliance or mandatory procedures.

Q: Is it part of a series?

A: Yes — it is one of a series of ASME STP‑PT technical reports addressing fracture mechanics, stress‑intensity factor solutions and related guidance for pipes, cylinders and pressure‑containing components (other STP‑PT reports from the same period cover complementary geometries and topics).

Q: What are the key keywords?

A: stress intensity factor; K‑factor; internal crack; thick‑walled cylinder; fracture mechanics; pressure vessel; fitness‑for‑service.