Search results
1826
[Page extract]
Speak to an Expert
Compressive shear testing is essential for verifying adhesive bond strength, layered composite integrity, and internal shear resistance in structural materials.
1827
[Page extract]
Introduction to equibiaxial flexure compression testing
Equibiaxial flexure compression testing is a materials testing method used to evaluate a specimen’s resistance to bending under multi-directional loading.
1828
[Page extract]
The concentric ring method
The most widely used approach to equibiaxial flexure compression testing is the concentric ring method. A circular specimen is supported on an outer ring and loaded through a smaller, concentric inner ring.
1829
[Page extract]
Comparison of flexure testing methods
Method
Loading direction
Best suited for
Advantages
1830
[Page extract]
Key standards for equibiaxial flexure testing
Internationally recognised standards ensure accuracy, repeatability, and comparability of results. Common references include:
1831
[Page extract]
Applications across industries
Equibiaxial flexure compression testing is used wherever material reliability under multi-directional stress is critical.
1832
[Page extract]
Mecmesin solutions for equibiaxial flexure testing
Mecmesin designs and manufactures precision equipment for standards-compliant equibiaxial flexure compression testing, including the concentric ring method. Our systems combine robust mechanical design with advanced control and analysis software.
1833
[Page extract]
Speak to an Expert
Equibiaxial flexure compression testing via the concentric ring method is a powerful tool for evaluating material strength under realistic, multi-directional stresses.
1834
[Page extract]
What is the Concora crush test?
Definition and overview
The Concora Crush Test (CCT) is a standardised method used to measure the crush strength of corrugated medium, specifically the fluted inner layer of corrugated board.
1835
[Page extract]
TAPPI T 824 standard
Overview of the standard
TAPPI T 824 is the internationally recognised standard that specifies the procedures, equipment requirements, and specimen preparation methods for conducting
1836
[Page extract]
Differences and similarities to other corrugated tests
While TAPPI T 824 focuses on the intrinsic crush strength of pre-fluted medium, other common corrugated tests measure different performance factors:
1837
[Page extract]
The role of ECT in quality assurance
The Edge Crush Test is a widely used measure for predicting box stacking performance.
1838
[Page extract]
How to conduct a Concora crush test
Step-by-step procedure
Specimen preparation - Cut medium to the required size, typically 152.4 mm by 25.4 mm strips, ensuring clean edges.
1839
[Page extract]
CCT compared to ECT and FCT
CCT - Material-level test, used to assess raw medium quality before conversion into board
1840
[Page extract]
Common challenges and solutions
Material inconsistencies - Variations in fibre composition and moisture content between batches can affect results.
1841
[Page extract]
Mecmesin solutions for Concora crush testing
Mecmesin offers advanced motorised test stands and fixtures for performing CCT in compliance with
1842
[Page extract]
Speak to an Expert
The Concora Crush Test, as defined in TAPPI T 824, is a critical step in corrugated medium evaluation.
1843
[Page extract]
Introduction to corrugated medium testing
Corrugated medium testing is a key process in the packaging industry, ensuring that materials used in box and carton production meet strict durability and performance standards.
1844
[Page extract]
Understanding TAPPI T 809 standard
TAPPI T 809 is an internationally recognised method for determining the flat crush resistance of corrugated medium.
1845
[Page extract]
Flat crush of corrugated medium (CMT test)
The flat crush test, also known as the Concora Medium Test (CMT), measures the maximum force a corrugated medium can withstand before flute collapse. In CMT testing, the medium is first formed into flutes using a laboratory fluter before testing.
1846
[Page extract]
Equipment and procedures
A flat crush tester comprises two smooth, parallel platens, one fixed and one moving under controlled load application. The conditioned specimen is placed between the platens with flutes oriented vertically.
1847
[Page extract]
Benefits of CMT testing for manufacturers
CMT testing offers multiple operational and commercial advantages:
1848
[Page extract]
Step-by-step guide to conducting a CMT test
Prepare the specimen - Cut to size with clean edges, ensuring flutes remain undamaged, and condition as per the standard.
Calibrate the equipment - Check the load cell and platen alignment.
1849
[Page extract]
Industry applications and case examples
Heavy industrial packaging - A manufacturer supplying boxes for machine components integrated routine CMT testing to track performance trends.