Flexure

Bend tests provide a quick and simple way to determine the strength and deformation properties of wood and timber products. The test is also particularly relevent in this application because wood is frequently used in the form of beams where resistance to bending is an important parameter. A range of fixtures is available to cater for various specimen sizes and strengths. All fixtures can be equipped with a range of optional support rollers some of which feature articulation to cater for warped specimens. The range of fixtures is ideal for tests on MDF and fiberboard as well as natural timber. 

Principe de fonctionnement

2820-04x Series bend fixtures are designed for static bend/flexure testing on a range of wood and timber products according to common International Standards. The beam attaches to the test instrument using simple mechanical interfaces which allows it to be removed when not in use. A range of optional support anvils and four-point conversion kits allow the fixtures to be configured to meet a wide range of standards. 

Specimens of the required size are supported by two anvils attached to a base beam. Force is applied either at the centre (three point bend) or at two points between the supporting rollers (four point bend). Deflection of the specimen can be measured using the optional deflection measurement yoke and a suitable extensometer.

Applications

  • Static bending tests on a wide range of wood and timber specimens including MDF and fiberboard at ambient temperatures 
  • Meets the following standards when used with appropriate optional anvil sets/4 point conversion kits and/or deflectometry: 
    • JIS A5905, JIS A5906, JIS A5908, JAS 112, JAS 601, 
    • BS 373, BS 5669, 
    • EN 310, EN 789, 
    • ISO 3133, 
    • ASTM D 1037, ASTM D 3037, ASTM D 143 
  • Type of Loading: Static flexure. Not suitable for high cycle dynamic fatigue tests 
  • Specimen shapes: Rectangular