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+91 80 28360184
4th Phase, Peenya Industrial Area
sales.india@instron.com

Three Point Bend Test Fixtures

THREE POINT BEND TEST FIXTURES

For Flex, Bend, and Fracture Toughness Bond Testing

 

The flexure fixture allows a variety of flexural and fracture toughness bond tests to be performed, including determination of flexural modulus, flexural strength and flexural yield strength. Easy to install, the 3-point fixture can be modified with an optional conversion kit to provide a 4-point bending conversion. Lower anvils are adjustable to accommodate specimens of different spans. Deflection of the specimen can be measured either through crosshead displacement, or for more precise measurement you can use a mid-span direct measurement plunger with a clip-on extensometer.

5 kN FLEXURE FIXTURE

Principle of Operation 

The specimen is supported on two precision machined anvils of a defined radius. The force is applied either centrally (3-point) or at a defined distance either side of the center (4- point). The support beam is graduated lengthways in metric units for accurate positioning of the anvils, equally spaced to the center line.

 

Features

  • Rated capacity 5 kN (500 kgf, 1,125 lbf)
  • 3-point flexure fixture with an optional conversion kit for 4-point loading
  • Conforms to ISO, ASTM, DIN, and many other standards
  • Fully adjustable span distance to suit a wide range of specimen sizes
  • Adjustable stops for specimen widths up to 50 mm (2 in) for precise alignment
  • Optional deflectometer plunger assembly
  • Rugged design for minimum maintenance
  • Temperature range: -100 to +350°C (-148 to +660°F)

Application Range

Type of loading: Static flexure, cyclic flexure tests
Specimen material: Plastics, metals, alloys, composites, ceramics and other materials
Specimen shapes: Strip, bar, components
Common standards: ASTM D790, ISO 178

 

5 kN FLEXURE FIXTURE

For Testing Plastics, Metals, Alloys, Composites, Microelectronics, and Components
 

100 kN Flexure Fixture

The 100 kN flexure fixture can perform 3-point flex / bend tests on specimens with a maximum width of 50 mm. A 4-point bend conversion kit is available. Lower span adjustable from 30 – 250 mm.
250 kN Flexure Fixture

250 kN Flexure Fixture

The 250 kN flexure fixture can perform 3-point flex / bend tests on specimens with a maximum width of 100 mm. A 4-point bend conversion kit is available. Lower span adjustable from 10 – 600 mm.

100 kN Guided-Bend/Weld Bend Test Fixture

Adjustable span for “U” bend tests of plane plate or welded flat specimens. Fixture consists of a t-slot base with adjustable span supports (0 – 254 mm) supported by two tie rods. Maximum specimen width up to 76 mm.
 

200 kN Cold Bend Testing Fixture for Steel Rebar

Cold bend testing fixture for bend testing of steel reinforcement bars in general accordance with specifications; ASTM A615, A706, A996A, & BS4449. Maximum specimen diameter up to 76 mm. Support span adjustable from 0 – 480 mm.

Bending / Hemming Test Fixture to VDA 238-100: 2020

The CP130604 fixture has a maximum force capacity of 20 kN and is designed specifically for tight radius bend testing of sheet metals in accordance with VDA 238-100. The punch radius, roller diameter, and roller distance are constrained to reduce lab-to-lab variability. This is especially important in automotive chassis and body components where stronger and thinner materials are increasingly used to meet lightweighting initiatives.

100 N and 1 kN Micro Flexure Fixture for Microelectronics

Used for bend or flexure testing of miniature components and specimen typically found in microelectronic applications, the micro-bend fixture supports the specimen on two lower anvils and the load is applied by a single or optional dual upper anvil.
 
Flexure Fixtures

2 kN Mini Flexure Fixture for Miniature Components

The mini flexure fixture is designed for three-point bend or flexure testing of smaller components and specimens, where the specimen is supported on two lower anvils and the load is applied by a single or optional dual upper anvil.