Mechanical Testing

A range of processes including:

  • Tensile and Compression Load Testing
    • A test piece or component is subjected to tension (or compression) until either a proof load is achieved or failure occurs.
    • Testing can be carried out on both metallic and some non-metallic materials.
  • Impact Testing
    • Used to measure the relative toughness/brittleness of a material and its capacity to resist mechanical shock in the presence of a notch at a range of temperatures from –196°C to elevated +200°C.
    • The two main types of testing are CHARPY and IZOD testing.
  • Hardness Testing
    • The hardness of a material is its resistance to indentation when a force is applied by a hardened steel/tungsten carbide ball or diamond indentor (conical or square based).
    • Test methods include Rockwell HR, Vickers HV and Brinell HB. 
  • Fatigue Testing
    • Fatigue testing at ambient temperatures of specimen and some component types.
    • Fatigue occurs when a material is subjected to repeated loading and unloading above a certain threshold. Above this threshold, cracks will begin to form at the surface, eventually a crack will reach a critical size and the structure will suddenly fracture.
  • Processes can be used to evaluate new or existing products for quality, viability and safety, against customer or industry specifications, or as cross checks against supplier statements.
  • Checks that the material is suitable and appropriate for the design application and provide assurances on safety and performance.
  • Processes can determine the peak stress, yield strength, elongation, reduction of area, ductility under stress, Young’s modulus and toughness.
  • Quality control ensures components will survive and perform in intended applications, or as a requirement to a material specification.
  • Tensile/Load Testing can be carried out on full size components from small product to bridge retaining bolts.
  • Test pieces machined in accordance with national and international specifications in our own machine shop.
  • Customer/inspection authority witness where required.
  • All our tests can be carried out to European and US standards for both commercial and aerospace product.
  • In Tensile Testing, stress strain and load deflection curves are produced for different materials for loads from less than 1kN to 1100kN. Typical specifications include ASTM E8, ASTM A370, BS EN ISO 6892-1, BS EN 2002-1, and compressive yield in accordance with ASTM E9.
  • Izod testing is always carried out at room temperature. Typical specification BS131 Part 1.
  • Charpy Testing can be carried out at temperatures between –196°C and +200°C. Typical specifications include ASTM E23, ASTM A370, BS EN ISO 148-1.
  • Hardness Testing can be carried out using Brinell (in house and on site), Rockwell Standard and Superficial (most scales), Vickers (both micro and macro – manual or semi-automatic). ASTM E10, ASTM E18, ASTM E92, ASTM E384, ASTM A370, ASTM E110, BS EN ISO 6506, BS EN ISO 6507 and BS EN ISO 6508.  Portable equipment can also be used on request, such as Equotip®(Leeb) hardness testers, and portable Rockwell and King Brinell machines.
  • Fatigue Testing has a maximum test load capacity 150kN. Typical operating frequency 60-180Hz, dependent on stiffness of specimen being tested (resonant frequency).  Digital equipment is used to control and monitor the test functions.

Matthew Mellor

Technical Services Director 

Carl Barker

Test House Manager

Roger Wheatley

Senior Technician NDT

Keith Blower

Technical Director

John Whitaker

Chief Chemist

Tom Varley

Chemical Analysis 

Graham Woodward

Chem Lab Supervisor

General Enquiries

Technical Services

Keighley Laboratories Ltd
Registered Office:
Croft House
South Street
Keighley
West Yorkshire
BD21 1EG
Registered in England 164811
UK Tel: +44 (0)1535 664211
Email: info@keighleylabs.co.uk

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