ISO 13061-8:2022

Name: ISO 13061-8:2022 — Physical and mechanical properties of wood — Test methods for small clear wood specimens — Part 8: Determination of ultimate strength in shearing parallel to grain
SKU: ISO 13061-8:2022
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Physical and mechanical properties of wood — Test methods for small clear wood specimens — Part 8: Determination of ultimate strength in shearing parallel to grain

Название (английский):

ISO 13061-8:2022

Physical and mechanical properties of wood — Test methods for small clear wood specimens — Part 8: Determination of ultimate strength in shearing parallel to grain

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 5
Дата публикации:: 30 июня 2022 г.
Издание:: ISO IS 13061 edition 1 version 1
ICS:: 79.040

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Описание (английский):

This document specifies a method for determining the ultimate strength in shearing parallel to grain of small clear wood specimens by measuring the breaking load applied statically along the radial or the tangential plane of a test piece.

Abstract

Overview

Key Topics

Scope and Purpose: Specifies testing methods for ultimate shearing strength parallel to the wood grain on small clear specimens under static loading.
Specimen Preparation: Requires sampling according to ISO 3129, with specimen widths and shearing surfaces between 20 mm and 50 mm; testing can be conducted on green (moisture above fibre saturation point) or air-dry conditioned specimens.
Testing Procedure: Uses a testing machine applying a gradually increasing shearing load at a controlled rate, leading to failure typically within 1 to 5 minutes.
Measurement and Calculation: Ultimate strength (in N/mm² or MPa) is calculated by dividing the maximum breaking load by the cross-sectional area of the specimen’s shearing plane.
Moisture Content Adjustment: Results can be adjusted to a standard 12% moisture content using recognized national or international methods to ensure comparability.
Reporting Requirements: Comprehensive documentation includes sampling details, test conditions, moisture content, density, load direction, testing speed, and any deviations or anomalies.

Applications

Implementing ISO 13061-8:2022 provides essential data for:

Timber Industry Quality Control: Verifying wood strength properties crucial for structural applications and product grading.
Material Research and Development: Characterizing wood behavior under shear stresses to optimize applications in construction, furniture making, and composites.
Engineering and Design: Incorporating accurate wood strength parameters into models and safety assessments for timber structures.
Regulatory Compliance: Ensuring wood products meet national and international mechanical property requirements through standardized testing methodologies.
Academic and Laboratory Testing: Facilitating reproducible experiments and comparative studies on different wood species and treatments.

Related Standards

ISO 13061-8:2022 references and aligns with the following related standards to provide a holistic testing framework:

ISO 3129: Wood sampling methods and general requirements for physical and mechanical testing of small clear specimens.
ISO 13061-1: Determination of moisture content for physical and mechanical wood tests.
ISO 13061-2: Determination of density for physical and mechanical wood tests.
ISO 24294: Timber vocabulary providing essential terms and definitions relevant to wood testing.
ISO 3347 (1976): The superseded standard for ultimate shearing stress parallel to grain, technically revised by ISO 13061-8.

By adhering to ISO 13061-8:2022, professionals gain consistent, reliable, and internationally recognized procedures to assess the ultimate shearing strength of wood, enabling better quality, safety, and performance in timber applications worldwide.

Технические детали

Технический комитет: ISO/TC 218 - Timber
SKU: ISO 13061-8:2022

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Каталог

ISO 3347:1976

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Wood — Determination of ultimate shearing stress parallel to grain

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