ISO 16842:2021 PDF
Metallic materials — Sheet and strip — Biaxial tensile testing method using a cruciform test piece
Metallic materials — Sheet and strip — Biaxial tensile testing method using a cruciform test piece
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 24
- Дата публикации:
- 16 июля 2021 г.
- Издание:
- ISO IS 16842 edition 2 version 1
- ICS:
- 77.040.10
This document specifies the method for measuring the stress-strain curves of sheet metals subject to biaxial tension using a cruciform test piece fabricated from a sheet metal sample. The applicable thickness of the sheet is 0,1 mm or more and 0,08 times or less of the arm width of the cruciform test piece (see Figure 1). The test temperature ranges from 10 °C to 35 °C. The amount of plastic strain applicable to the gauge area of the cruciform test piece depends on the force ratio, slit width of the arms, work hardening exponent (n-value) (see Annex B) and anisotropy of a test material.
Abstract
Overview
ISO 16842:2021 specifies a standardized biaxial tensile testing method using a cruciform test piece to measure the biaxial stress–strain behavior of sheet and strip metallic materials. The standard defines the recommended cruciform geometry, strain-measurement positions, testing-machine requirements and data reduction to determine true stress, true strain and yield-related properties under biaxial tension. Key scope limits include sheet thickness ≥ 0.1 mm and ≤ 0.08 × arm width, and test temperature between 10 °C and 35 °C.
Keywords: ISO 16842:2021, biaxial tensile testing, cruciform test piece, sheet metals, biaxial stress-strain.
Key topics and technical requirements
- Cruciform test piece geometry
- Recommended shape and dimensions (gauge area, arms, grip length).
- Arm width B normally ≥ 30 mm; thickness a must satisfy a ≤ 0.08 B (exceptions by agreement).
- Seven slits per arm (central plus three on each side) with precise positioning and slit length L satisfying B ≤ L ≤ 2B.
- Slit width w should be as small as possible (preferably
Технические детали
- Технический комитет
- ISO/TC 164/SC 2 - Ductility testing
- SKU
- ISO 16842:2021
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