The flexural properties of materials, such as flexural (bend) strength and flexural strain, are assessed using bend fixtures in conjunction with universal testing machines.
ADMET bend fixtures come in a range of force capacities, support types, and span lengths and are set up for 3-point and 4-point bend testing. When it comes to choosing the ideal model, the size of the test specimen, anticipated forces, and the test procedure are always taken into account.
FF-2.5/10T Bend Fixtures with Hardened Supports
Four point bend fixture on eXpert 2600. Image Credit: Admet
Testing Standards
ASTM D790 | ASTM D6272 | ASTM D7264 | ASTM F382 | ISO 14130
Fixture Configurations
FF-2.5T refers to aluminum bending fixtures designed to handle loads up to 2.5 kN. For higher load requirements, FF-10T bend fixtures, made of steel, can support up to 10 kN. Both types of fixtures feature hardened supports and offer support spans of 150 or 300 mm. Standard support radii are available in 0.5, 1, 1.5, 2, 3, 3.2, 4, 5, and 10 mm. Additionally, these bending fixtures can be configured in two different setups: three-point and four-point bending.
FF-2.5/10X Bend Fixtures with Interchangeable Rollers
Three-point bend fixture on eXpert 7600. Image Credit: Admet
Testing Standards
ASTM B312 | ASTM D790 | ASTM D2990 | ASTM D6272 | ASTM D7264 | ASTM E1820 | ISO 14130
Fixture Configurations
FF-2.5X refers to aluminum bending fixtures capable of supporting loads up to 2.5 kN. For heavier applications, the FF-10X steel bending fixtures are designed to accommodate up to 10 kN. These fixtures feature interchangeable rollers and provide support spans of either 150 or 300 mm. Roller radii options include 0.5, 1, 1.5, 2, 3, 3.2, 4, 5, and 10 mm. Both fixture types are available in two bending configurations: three-point and four-point.
FF-50/100T High-Capacity Bend Fixtures
3 point bend fixture with wood sample. Image Credit: Admet
Testing Standards
ASTM C99 | ASTM C203 | ASTM C348 | ASTM C393| ASTM C947 | ASTM D7249 | ASTM E190 | ASTM E290 | ISO14125
Fixture Configurations
The FF-50T is a high-capacity aluminum bending fixture designed to handle loads up to 50 kN, whereas the FF-100T is its steel counterpart capable of supporting 100 kN. These fixtures are equipped with diameter rollers of 10 mm, 20 mm, and 30 mm. A variety of support spans are available, including 360, 500, 600, 700, 800, 900, 1000, 1100, 1200, and 1300 mm.
FF-T-ASTM C158 Bend Fixture
Image Credit: Admet
Testing Standard
ASTM C158
Fixture Configuration
The bend fixture designed to comply with ASTM C158 specifications is a four-point fixture equipped with movable and articulating rollers specifically intended for testing glass specimens. It features upper support bars measuring 200 mm in length and lower support bars at 300 mm, respectively.
FF-T-ASTM C1161 Bend Fixture
Image Credit: Admet
Testing Standards
ASTM C1161| ISO 843-1 | ISO 14704
Fixture Configurations
For ASTM C1161 ceramic flexural testing, ADMET offers comprehensive testing configurations that include matching support spans and roller diameters. The bend fixtures, designated as FF-T-ASTM C1161, are available with options for 3-point, 4-point, or both types of bend loading. In accordance with the standard, the rollers on these fixtures are designed to be freely movable and fully articulating to accommodate various testing requirements.
FF-T-ASTM C1609 High Capacity Bend Fixture and Assembly
ASTM C1609 fixture with displacement transducer. Image Credit: Admet
Testing Standards
ASTM C1609 | ASTM C1812
Fixture Configuration
ADMET sets itself apart from other testing machine manufacturers by providing equipment designed to perform the demanding ASTM C1609 tests. Recent modifications made by the Standards Committee have updated the specifications for the bend fixture used in ASTM C1609 testing. These revisions include enhancements to the ASTM C1609 three-point bend fixture, which now features:
- Loading nose to be designed per ASTM C78
- Bottom brackets to be designed according to ASTM C1812
Users can order the FF-100T-ASTM C1609 bend fixture with the cage and two displacement transducers that have holders located in the middle of the span.
FF-T-ASTM D2344 Bend Fixture
Image Credit: Admet
Testing Standard
ASTM D2344
Fixture Configuration
The FF-T-ASTM D2344 is a 50 kN bend fixture designed with rollers for flat laminate and includes a special bottom support with free-moving slides for curved beam strength tests.
FF-T-ASTM D6415 Bend Fixture
Image Credit: Admet
Testing Standard
ASTM D6415
Fixture Configuration
The FF-T-ASTM D6415 fixture is a specialized curved beam strength bend fixture crafted specifically for assessing 90° angled samples of fiber-reinforced polymer-matrix composites as per ASTM D6415. 50 kN is the standard force capacity.
FF-T-ASTM D7774 Bend Fixture
Image Credit: Admet
Testing Standard
ASTM D7774
Fixture Configurations
ASTM D7774 specifies requirements for 3-point and 4-point bend tests and Admet offers fixtures in both configurations that conform to the standard. Admet's special roller system is designed to securely fix the samples between the rollers.
ADMET Custom Bend Fixtures
Custom 4 point bend fixture. Image Credit: Admet
ADMET specializes in designing, building, delivering, and implementing custom mechanical test equipment, including bend fixtures tailored to meet specific customer testing requirements. The company also has a track record of custom-building bend fixtures for various materials and testing applications.