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1351
Case study
Teste de força da máscara facial
Requerimento Com a China produzindo agora mais de 200 milhões de máscaras por dia - mais de vinte vezes o valor que faturou no início de fevereiro - e outras nações desviando a experiência em fabricação para a produção de máscaras e máscaras,
1352
Case study
Testador de tração por ímã
Requerimento Os separadores magnéticos capturam e removem corpos estranhos ferromagnéticos dos fluxos de produtos, a fim de garantir alta qualidade do produto e evitar danos às máquinas e equipamentos de processamento.
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Performing the flat crush test
A standard flat crush test includes the following stages:
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Performing the edge crush test
Sample preparation
Cut specimens to standard dimensions with clean, parallel edges.
Condition samples in a controlled temperature and humidity environment to ensure consistent moisture content.
Wax edges if required
1355
Case study
Dispositivo de entrega de vacinas e testes de embalagem
Requerimento Como o COVID-19 se espalhou rapidamente pelo mundo, há um esforço global conjunto para encontrar uma vacina.
1356
Case study
Teste de força de componentes e acessórios do relógio
Requerimento A hora exibida em nossos telefones celulares e outros dispositivos digitais sempre será mais precisa do que a hora exibida até mesmo no relógio mecânico mais habilmente projetado - então, por que a indústria relojoeira continua a
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Jaws
Choosing the most appropriate jaw type for a tensile grip can be tricky. It is a balance between having sufficient hold of the specimen to prevent it slipping and not having too ‘aggressive’ a hold which damages the specimen.
1358
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Introduction to chord modulus
Chord modulus is a key parameter in material testing, providing engineers and quality control teams with a precise measure of a material’s stiffness under defined loading conditions.
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Introduction to double rip tongue tear testing
Double rip tongue tear testing is a recognised method for assessing the tear resistance of flexible materials including co
1360
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Introduction to compressive burst testing
Compressive burst testing is a specialised method for determining the maximum internal pressure a container can withstand before structural failure.
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Introduction to loop tack testing
Loop tack testing is a specialist method used to evaluate the initial tack, or quick stick, of pressure-sensitive adhesives (PSAs).
1362
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Introduction to tear testing
Tear testing is a quality control procedure used to measure the resistance of a material to tearing under controlled conditions.
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Introduction to yield point testing
Yield point testing is essential for understanding the mechanical behaviour of materials.
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Key testing methods
Different materials require different approaches to compressive hardness testing. The most common methods are:
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Case studies - real-world applications
Medical vial stoppers
A pharmaceutical company tested rubber vial stoppers to ASTM F2132 to ensure they resisted accidental puncture during handling.
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Tamper-evident packaging and torque
The role of bridges in tamper-evidence
Tamper-evident bridges are a critical safety feature. Once broken, they provide a clear visual indicator that a product has been opened.
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Tools (calibration related)
To maintain consistent performance and accuracy, tools must be checked regularly.
1369
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Introduction to compressive hardness
Compressive hardness is a measure of a material’s ability to resist deformation when a compressive load is applied to its surface.
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Destructive and non-destructive methods
Testing may be performed destructively or non-destructively depending on the objectives.
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Pharmaceuticals
The pharmaceutical industry is tightly controlled and subject to strict regulations, which means that testing is often at the heart of demonstrating compliance to the various international standards which govern the industry.
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Introduction to strip method tensile testing
Among the range of tensile testing techniques, the strip method is widely recognised for its accuracy and repeatability.
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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.
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Introduction to cleavage strength testing
Cleavage strength testing is a specialised method for assessing a material or adhesive joint’s ability to resist forces that try to split it apart along a bond line.
1375
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The standard specifies the procedures for measuring the force required for needle penetration and the drag force as the needle travels through a simulated skin or tissue.