15.reverse bend test materails

Disclosure to Promote the Right To Information

  • Purpose: The Parliament of India aims to establish a regime ensuring the right to access information controlled by public authorities, fostering transparency and accountability.

  • Target Audience: The information pertains particularly to disadvantaged communities and those involved in education and knowledge pursuits.

  • Content Overview: An attached public safety standard from the Bureau of Indian Standards is provided for public dissemination.

  • Quotes:

    • "Invent a New India Using Knowledge" - Satyanarayan Gangaram Pitroda

    • "Step Out From the Old to the New" - Jawaharlal Nehru

    • "The Right to Information, The Right to Live" - Mazdoor Kisan Shakti Sangathan

    • "Knowledge is such a treasure which cannot be stolen" - Bhartṛhari—Nītiśatakam

IS 1716 (1985) Overview

  • Document Title: Method for Reverse Bend Test for Metallic Wire

  • Revision: Second Revision

  • Standard Issuer: Indian Standards Institution

  • Location: Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi

  • Date of Adoption: Adopted on 28 February 1985

Standard Development and Committee

  • Committee Oversight: Methods of Physical Tests Sectional Committee

    • First published in 1960, revised in 1971

    • Revised to align with ISO standards and streamline references; IS 6878-1973 superseded.

Test Methodology Details

Scope

  • The standard specifies procedures for determining the plastic deformation ability of metallic wire with diameters ranging from 0.3 to 10mm.

Principle of Test

  • The reverse bend test involves repeated bending of a wire sample over a cylindrical support in alternating directions.

Equipment Specifications

  • Testing Machine: Must follow specific construction guidelines outlined in diagrams and tables within the document.

  • Cylindrical Supports and Gripping Faces: Should possess sufficient hardness, conform to specified tolerances, and allow free movement of wire.

Test Procedure

  1. Preparation of Test Piece: Wire must be as straight as possible; any curvature should be slight. Straightening should avoid surface damage.

  2. Conducting the Test: Bending must be carried out at ambient temperatures. The test piece is subjected to bends through 90° in alternating directions, maintaining a smooth, uniform rate of bending.

  3. End Conditions: The test continues until the specified number of bends is reached or until visible failure occurs.

Report Requirements

  • Contents of Test Report: Must include reference to the standard, test piece identification, nominal size specifics, preparation details, test conditions, and results.

Licensing Information

  • Copyright Notice: The publication is protected under the Indian Copyright Act (XIV of 1957); reproduction without permission is considered infringement.