ASME STP-PT-043-2010 PDF

Full title and description

St ASME STP-PT-043-2010 — ASME Flawed Cylinder Testing (designation ASME STP-PT-043:2010). This ASME standard test procedure (STP) documents a program of flaw‑introduction, fatigue cycling and burst testing on composite overwrapped pressure vessels (composite cylinders) to quantify the effect of surface cuts of varying depth on initial and post‑cycle burst pressure; the results were used to inform ASME Boiler & Pressure Vessel (BPV) Code Cases and code revisions related to composite pressure vessels.

Abstract

A test program is reported that gives data on initial burst pressure and burst pressure after pressure cycling for composite cylinders with machined surface cuts of different depths. The document summarizes vessel configuration, the test plan, flaw descriptions, fatigue and burst testing procedures, results and discussion, and conclusions that were considered in development of ASME Code Cases for composite pressure vessels.

General information

• Status: Reported withdrawn by some standards distributors (withdrawn date reported 29 August 2024); availability and listing vary among suppliers (some catalogs still list the STP as active/in stock).
• Publication date: 17 December 2010 (ASME STP-PT-043:2010).
• Publisher: American Society of Mechanical Engineers (ASME).
• ICS / categories: Pressure vessels, composite materials, mechanical testing and evaluation; related to ASME BPV (Boiler & Pressure Vessel) code development for composite overwrapped pressure vessels and hydrogen tank applications.
• Edition / version: 2010 edition (STP‑PT‑043:2010).
• Number of pages: Typically listed as 72 pages in multiple catalogs (some vendor listings show minor variations, e.g., 72–74 pages depending on format).

Scope

The STP documents experimental methods and measured outcomes for flawed composite cylinders: description of vessel geometry and liner/overwrap configuration, planned flaw types and depths (surface cuts), fatigue cycling protocols (including 0, 10,000 and 20,000 cycles in reported tests), burst testing methods, and analysis of burst pressure loss due to flaws and cycling. The stated aim is to supply empirical data to support ASME BPV Code Cases and revisions addressing composite pressure vessel design and inspection.

Key topics and requirements

• Test plan and specimen configuration for composite overwrapped pressure vessels (COPVs) and non‑load‑sharing polymer liners.
• Definition and machining of surface flaws (cuts) at multiple depths and locations.
• Fatigue (pressure cycling) protocols and cycle counts used prior to burst testing.
• Burst testing procedures and measurement of initial and post‑cycle burst pressures.
• Presentation and interpretation of results to inform ASME BPV Code Cases and composite vessel design guidance.

Typical use and users

Primary users are ASME code committees, pressure‑vessel and composite‑vessel designers, manufacturers of composite overwrapped pressure vessels (including hydrogen tank suppliers), materials and test laboratories, and regulators or certification bodies evaluating the effect of surface damage and fatigue on vessel burst performance. The STP is used to inform risk assessments, inspection criteria and Code Case development for composite pressure vessels.

Related standards

Related ASME BPV Code sections and Code Cases addressing composite overwrapped pressure vessels and hydrogen tank design; other ASME STP‑PT series reports on composite vessel testing and evaluation. Users commonly consult ASME BPV code material, associated ASME Code Cases for composite vessels, and adjacent test reports in the STP‑PT series for broader context.

Keywords

ASME STP-PT-043:2010; Flawed Cylinder Testing; composite overwrapped pressure vessel; COPV; burst testing; fatigue cycling; pressure vessel testing; ASME BPV; Code Case; hydrogen tanks; surface flaw; inspection.

FAQ

Q: What is this standard?

A: ASME STP-PT-043:2010 is an ASME standards testing publication titled "ASME Flawed Cylinder Testing" that documents an experimental program of introduced surface cuts, fatigue cycling and burst testing on composite cylinders to characterize burst behavior before and after pressure cycling.

Q: What does it cover?

A: It covers specimen and vessel configuration, defined flaw types and depths (machined cuts), the test plan (including fatigue cycling regimes), burst test methods, results and discussion, and conclusions used to support ASME Code Case and BPV code development for composite pressure vessels.

Q: Who typically uses it?

A: Code developers, manufacturers of composite pressure vessels (COPVs), test laboratories, materials engineers, and regulatory/certification bodies evaluating damage tolerance, inspection intervals and design allowances for composite cylinders.

Q: Is it current or superseded?

A: Several standards distributors list ASME STP‑PT‑043:2010 as withdrawn with a reported withdrawn date of 29 August 2024, while other catalogs continue to list the document as available/in stock. Users should verify current status and availability with ASME or their authorized standards supplier before relying on the STP for compliance or code development.

Q: Is it part of a series?

A: Yes — it is part of ASME's STP‑PT series of test procedure reports related to pressure‑vessel testing and evaluation; related STP reports and ASME BPV Code Cases on composite vessels should be consulted for complete context.

Q: What are the key keywords?

A: Composite overwrapped pressure vessel (COPV), flawed cylinder, burst pressure, fatigue cycling, ASME BPV, Code Case, hydrogen tanks, inspection, test plan.