Tensile testing

Teacher notes

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Overview

Tensile testing is an engineering testing procedure used to determine properties of various engineering materials. These properties include Young’s modulus, elastic limit, ultimate tensile strength, ductility etc.

This resource contains a series of videos that identify why tensile testing is performed, which materials are suitable for tensile testing and the methods used to conduct tensile testing. Example testing is carried on a Hounsfield tensometer, an Instron tensometer and a universal testing machine.

Students can also use a virtual tensometer to test a variety of metals and use the results to calculate stress, strain and Young’s modulus.

Syllabus links

This unit has been developed to support students studying the following courses.

Stage 6 Engineering studies

Outcomes:

Below are relevant extracts from the syllabus. The items in bold relate to this resource. The complete syllabus can be downloaded from http://www.boardofstudies.nsw.edu.au/syllabus_hsc/.

Relevant syllabus extract from the Preliminary Engineering studies course
Preliminary course
Braking systems (page 22 of the syllabus)
Students learn about: Students learn to:

Engineering mechanics and hydraulics

  • stress and strain
    • stress (tensile and compression)
    • load/extension diagram
    • strain (tensile and compression)

  • distinguish between force, stress and strain

Engineering materials

  • testing of materials
    • tensile and compression test

  • conduct relevant mechanical tests on materials
Bio-Engineering (page 25 of the syllabus)
Students learn about: Students learn to:

Engineering mechanics and hydraulics

  • stress and strain (tensile and compression forces)
  • apply mathematical and/or graphical methods to solve problems of bioengineering practice
Relevant syllabus extract from the HSC Engineering studies course
HSC course
Civil structures (page 31 of the syllabus)
Students learn about: Students learn to:

Engineering mechanics and hydraulics

  • stress and strain
    • shear stress
    • engineering and working stress
    • yield stress, proof stress, toughness, Young’s modulus, Hooke’s law, engineering applications
    • factor of safety
    • stress/strain diagram

  • apply mathematical and/or graphical methods to solve problems related to the design of civil structures
Lifting devices (page 37 of the syllabus)
Students learn about: Students learn to:

Engineering materials

  • testing of materials used in lifting devices
    • tension, compression

  • describe the properties, uses and appropriateness of materials used in lifting devices

Stage 5 Industrial technology (Engineering option)

Outcomes:

Below are relevant extracts from the syllabus. The items in bold relate to this resource. The complete syllabus can be downloaded from http://www.boardofstudies.nsw.edu.au/syllabus_sc/.

Relevant syllabus extract from the Industrial technology (7-10) course
Industrial technology–Engineering
Engineered structures–Core module 1 (page 68 of the syllabus)
Students learn about: Students learn to:

Materials

  • the properties, structure and applications of materials including:
    • hardness
    • ductility
    • tensile and compressive strength
  • the elastic and plastic behaviour of materials
  • use materials in the design and production of structures based on an understanding of their properties
  • conduct experiments and tests to understand the properties of materials