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Testing Solutions » By Standard » ASTM » ASTM D1621

ASTM D1621-16 Compressive Properties of Rigid Cellular Plastics

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  • ASTM D1621
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ASTM D1621-16 specifies the test conditions for determining the compressive properties of rigid cellular materials, particularly expanded plastics. Rigid foams are typically used in the construction industry as sound and thermal insulation. Calculations referenced in this standard include yield points, compressive strength, and compressive modulus. Suitable systems for this application include 3300 Series and 5900 Series electromechanical testing machines equipped with compression platens. 

The challenges of testing to this standard are:

  • Displacement measurement
  • Non-parallel specimens
  • Test setup
 

Instron® Solution:

  • Displacement measurement – When  measuring compressive displacement, ASTM D1621-16 allows for measurement using direct compression platen displacement or via crosshead extension by eliminating the effects of system compliance. Instron offers linear variable displacement transducers (LVDTs) for measurement directly from the platens. The 2601-04x series LVDTs can mount directly on the 2501 series compression platens. To measure via crosshead extension, Bluehill® Universal testing software can do an automatic compliance correction to eliminate system compliance from the test curve.
  • Non-parallel specimens – The parallelism of the compression platens is important, and it is recommended that a spherical seating style compression platen is utilized along with a rigid platen. The self-aligning nature of this fixture will maximize the contact area between the platen and the specimen. Swivel seating can be placed on the platen attached to the instrument's base or load cell in the moving crosshead. To reduce the possible effects from off-center loading, it is preferred to place the swivel seat in the base.
  • Test setup – To make testing easier, leaving a 10 to 30 mm gap between the specimens allows the user to quickly and easily remove the tested specimens and position new ones. The preload function in Bluehill Universal software automatically moves the upper compression platen down to precisely touch the specimen at a pre-defined load. The preload function reduces the amount of operator interaction, saving time and improving accuracy.
 

It is important to review ASTM D1621-16 in order to fully understand the test setup, procedure, and results requirements.

5900 Series Premier Testing Systems Brochure

5900 Universal Testing Systems are engineered for precision, built for durability, and offer the flexibility for changing requirements. They are designed with standard and optional features that increase testing efficiency and improve the testing experience for the operator. A wide range of models are available for testing capacities from < 100N up to 600kN.

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3300 Series - Affordable Testing Solutions

Instron 3300 Series Universal Testing Systems for Tensile, Compression, Bend, and other material property tests.

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  • 6/19/2017
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Bluehill® Universal Software

Bluehill Universal Software is built from the ground-up for touch interaction and an intuitive user experience. Discover simpler and smarter testing with features such as pre-loaded test methods, QuickTest in seconds, enhanced data exporting: and Instron Connect – a new feature that provides a direct communication link to Service. Users of previous versions of software such as Bluehill 2 and Bluehill 3 can easily upgrade to the newest version of Bluehill.

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  • 2/26/2017
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2601 Series LVDT Deflection Sensors

The 2601 Series Linear Variable Differential Transformer (LVDT) displacement transducers are measuring devices that measure the displacement of the load frames.

  • Products
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Plastics Testing Solutions Brochure

The Plastics Testing Solutions brochure is a 40-page, applications-focused, and standards-based brochure. Important standards such as ISO 527-1, -2, -3, ISO 11443, ISO 75, ASTM D638, Astm D3835, are covered in a detailed testing challenge and solution format. The brochure addresses the most prominent and widely-used standards in the materials testing industry for plastics. Test types such as Impact, Rheology, Thermo-Mechanical, Specimen Preparation, Mechanical Testing, Dynamic/fatigue, and Hardness are described in great detail.

  • Applications
  • 11/15/2017
  • 2.1 MB

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