ISO 1926:2009 PDF

Name: ISO 1926:2009 — Rigid cellular plastics — Determination of tensile properties
SKU: ISO 1926:2009
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Rigid cellular plastics — Determination of tensile properties

Название (английский):

ISO 1926:2009

Rigid cellular plastics — Determination of tensile properties

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 10
Дата публикации:: 17 ноября 2009 г.
Издание:: ISO IS 1926 edition 4 version 1
ICS:: 83.100

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Описание (английский):

ISO 1926:2009 specifies a method of determining the behaviour of rigid cellular plastics materials when they are subjected to a tensile stress. It applies primarily to cellular materials having a compression resistance sufficient to permit suitable gripping of the test specimens. If it is impossible to grip the test specimen, the method is modified so that the ends of the specimen are reinforced with metal plates.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO 1926:2009 - Rigid cellular plastics - Determination of tensile properties specifies a standardized method to measure how rigid cellular plastics behave under tensile stress. The standard defines specimen shapes, conditioning, test-machine requirements, test speed, data recording and calculation of tensile strength and elongation. It applies mainly to cellular materials with sufficient compression resistance to permit gripping; when gripping is not possible, the standard provides a variant using metal reinforcing plates.

Key topics and requirements

Scope: Tensile testing procedure for rigid cellular plastics; variant for specimens that cannot be gripped (metal plates).

Specimen shape and number: Test specimens follow the standard’s illustrated dimensions; at least five valid specimens are required. Specimens breaking outside the gauge length are rejected.

Conditioning: Specimens must be conditioned per ISO 291. For precise measurement, a minimum of 6 hours at standardized atmospheres is specified (commonly 23 ± 2 °C and 50 ± 10 % RH).

Test machine & clamps: Clamps must prevent slipping without introducing localized pressure damage. The movable grip rate is 5 ± 1 mm/min. Force measurement accuracy must be within ±1%.

Extensometer: If used, it must exert minimal force and read gauge-length changes to 0.1 mm accuracy.

Calculations: Tensile strength (kPa) is calculated from maximum force divided by the original cross-sectional area of the narrow section; elongation is expressed as percentage increase of original gauge length.

Metal plate variant: Describes plate geometry, adhesive requirements (adhesive film shear strength greater than the material), and modified gripping arrangements when ends are reinforced.

Precision: Interlaboratory data indicate typical repeatability ≈ 3% and reproducibility ≈ 10% for tensile measurements.

Test report content: Must include reference to ISO 1926:2009, material description, conditioning, specimen type (note if metal plates used), number of specimens, orientation vs anisotropy, individual results and averages, stress–strain curve, deviations from the method and date.

Applications and users

ISO 1926:2009 is used by:

Materials and R&D engineers evaluating new rigid cellular plastic formulations

Quality control and testing laboratories certifying product mechanical properties

Manufacturers of insulation panels, core materials, sandwich structures and other rigid foam products who need reproducible tensile-property data

Procurement and compliance teams requiring standardized test evidence for specifications

Practical benefits include consistent tensile-property data for material selection, quality acceptance, and product development.

Related standards

ISO 291 - Standard atmospheres for conditioning and testing (referenced for specimen conditioning)

ISO 5725‑2 - Accuracy (trueness and precision) of measurement methods - Part 2 (used for interlaboratory precision analysis)

Keywords: ISO 1926:2009, rigid cellular plastics, tensile properties, tensile strength, extensometer, specimen conditioning, metal plates, tensile test method.

ISO 1926:2009 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and users

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