ASTM D7249 Long Beam Flexure Fixture for Sandwich Constructions

Engineered in strict compliance with ASTM D7249, this Long Beam Flexure Fixture for Sandwich Constructions is designed to evaluate the flexural properties of composite sandwich panels, such as honeycomb structures. Featuring an adjustable span and a unique roller-connected loading pad design, it ensures continuous and uniform contact with the specimen throughout the test. Capable of handling loads up to 50 kN, it delivers precise measurements of flexural strength, modulus, and maximum strain — making it an essential tool for advanced composite material analysis and structural design.

Overview

Engineered in strict accordance with ASTM D7249 standards, this fixture is designed for long beam flexure testing of sandwich constructions. It provides a reliable testing platform to evaluate the flexural properties and structural integrity of composite sandwich panels.

Design Features and Benefits

Continuous Contact Design:
The steel loading pads and support anvils are connected via 15 mm diameter rollers, ensuring that the loading pads maintain continuous and uniform contact with the specimen throughout the entire testing process.
Adjustable Span :
Features an easily adjustable span design, offering high operational convenience and flexibility for various specimen sizes.

Applications

Primary Purpose:
This fixture is primarily used to determine the flexural strength, flexural modulus, and maximum strain of honeycomb sandwich panels. It is an essential tool for evaluating the mechanical performance of composite materials under bending loads, providing critical data for structural design and quality control.
Applicable Standards:
ASTM D7249
Specimen Materials:
Honeycomb sandwich panels and other composite sandwich constructions.

Technical Specifications:

Parameter ACAD7249A0
(With Dial Indicator)
ACAD7249A2
(31.75 mm Interface)
1 Part No. 1JAASD724901 1JAASD724903
2 Max Load Capacity 50 kN 50 kN
3 Upper Loading Pad Width 25 mm 25 mm
4 Lower Support Pad Width 25 mm 25 mm
5 Upper Span 290 mm 290 mm
6 Lower Span 560 mm 560 mm
7 Anvil Hardness 50 – 55 HRC 50 – 55 HRC
8 Fixture Dimensions (H×W×D) 510 × 640 × 80 mm 462 × 640 × 80 mm
9 Weight 40.5 kg 38.46 kg
10 Operating Temperature -70 to 150 °C -70 to 150 °C
11 Built Material Steel Steel
12 Upper Interface Φ 31.75 mm, Φ 40 mm Φ 31.75 mm, Φ 40 mm

Why Choose Us?

  • •  We provide 7×24 technical consultation, operator training, and timely software updates.

  • •  We offer remote monitoring of equipment status, enabling rapid diagnosis and resolution when abnormalities occur.

  • •  Keeping up with the latest development of widely adopted international standards from ASTM, ISO, etc. to ensureyour test results relevant and credible

  • •  Maximizing your lab investment returns with tailored solutions to your unique needs from cost effective hardware tosoftware customization

  • •  We treat everyone, be it clients, colleagues or partners, with honesty and sincerity.

  • •  Staying at the forefront of testing technologies that continuously improve test accuracy, repeatability, and eficiency