ISO 10345-2-1992 PDF

Full title and description

ISO 10345-2:1992 — Glass — Determination of stress-optical coefficient — Part 2: Bending test. This part defines a bending test method for isotropic glass to determine the wavelength-dependent stress‑optical coefficient, a material property used to relate measured stress birefringence to mechanical stress.

Abstract

Describes the bending test for isotropic glass. The stress‑optical coefficient determined by this method is a characteristic value of glass and is necessary for calculating stresses from stress‑induced birefringence measurements (the method specifies apparatus, specimen geometry, loading, and optical measurement procedures).

General information

• Status: Published (standard reviewed and confirmed; remains the current edition as of the latest ISO review).
• Publication date: 7 May 1992 (Edition 1, 1992).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 81.040.01 — Glass in general.
• Edition / version: Edition 1 (1992).
• Number of pages: 5 pages (typical published PDF length as listed by standards distributors).

Scope

This part of ISO 10345 specifies a bending (flexural) test for determining the stress‑optical coefficient of isotropic glass. It covers required apparatus (stressing equipment and polarization/compensation optical measurement), specimen dimensions and orientation, loading procedure, measurement of optical path difference (to a stated resolution), and reporting of results — including the reference wavelength (commonly using an interference filter centered on 589.3 nm) and the required geometry (support span to load distance approx. 5:1). The procedure is intended for laboratories and producers needing a reproducible method to obtain the stress‑optical coefficient for use in stress analysis by photoelastic/birefringence techniques.

Key topics and requirements

• Definition and significance of the stress‑optical coefficient for isotropic glass.
• Design and geometry of bending (flexural) test apparatus (support span, loading edges, loading pieces hung on gimbals).
• Specimen dimensions and preparation requirements for reproducible results.
• Optical measurement methods: use of compensator or counting isochromates to determine optical path difference (measurement resolution to ~5 nm) and use of white light with an interference filter at ~589.3 nm.
• Procedures for applying load, recording measurements, and calculating the stress‑optical coefficient as a function of wavelength.
• Reporting requirements to ensure results are comparable between laboratories (including temperature/wavelength/geometry conditions).

Typical use and users

Used by materials laboratories, optical glass manufacturers, quality control engineers, research institutions, and calibration/test laboratories performing photoelastic or birefringence-based stress analysis on glass components. It is relevant where accurate conversion of measured birefringence to stress is required (e.g., optical component manufacturing, safety glazing evaluation, and research on glass mechanical/optical properties).

Related standards

ISO 10345 has multiple parts; Part 1 covers the tensile test method for the stress‑optical coefficient (ISO 10345-1:1992). Other related standards include vocabulary and glass test method standards referenced within the ISO 10345 series (for example ISO 9802 for raw optical glass vocabulary and related test-method guidance cited by ISO 10345).

Keywords

stress‑optical coefficient, stress‑optics, stress birefringence, photoelasticity, glass testing, bending test, flexural test, optical glass, ISO 10345-2:1992.

FAQ

Q: What is this standard?

A: ISO 10345-2:1992 is an international standard that specifies a bending (flexural) test method to determine the stress‑optical coefficient of isotropic glass.

Q: What does it cover?

A: It covers the required apparatus, specimen dimensions, loading and measurement procedures (including optical measurement of birefringence and calculation of the stress‑optical coefficient at a reference wavelength), and reporting to ensure reproducible laboratory results.

Q: Who typically uses it?

A: Optical and materials testing laboratories, glass manufacturers, R&D groups, and any organization needing to convert measured birefringence into stress values for glass components.

Q: Is it current or superseded?

A: The ISO record shows ISO 10345-2:1992 as the published edition (1992) and indicates the document was reviewed and confirmed during periodic ISO reviews (it remains the published edition at the time of the ISO record). Users who need the absolute latest status or national adoption details should confirm with ISO or their national standards body before procurement.

Q: Is it part of a series?

A: Yes — ISO 10345 is a multipart standard. Part 1 specifies a tensile test (ISO 10345-1:1992) and Part 2 is the bending test described here; other related glass test and vocabulary standards are referenced by the series.

Q: What are the key keywords?

A: stress‑optical coefficient, bending test, glass, photoelasticity, stress birefringence, optical measurement, ISO 10345‑2.