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1026
[Page extract]
ISO 527-4
ISO 527-4 determines the tensile properties of isotropic and orthotropic fibre reinforced plastic composite sheeting and film including the tensile strength and modulus of elasticity, strain, elongation and the tensile energy to break (TEB).
1027
[Page extract]
Introduction to penetration and puncture resistance testing
Penetration and puncture resistance testing are essential for evaluating how well a material can withstand force from sharp, pointed, or blunt objects.
1028
[Page extract]
ASTM F1269-06
These test methods cover tests to determine the shear strength of a series of ball bonds made by either thermosonic or thermal compression techniques using either gold or copper wires.
1029
[Page extract]
Construction
Mecmesin systems and gauges are designed for the application of international and industry standards for quality and safety...
1030
[Page extract]
Torque testing
Torque testing is a way of determining how an object will react when it is being turned - during normal operation or being twisted until it deliberately fails or breaks.
1031
[Page extract]
ISO 13939
Describes a method of comparing the performance test results of foil journal bearings, which are lubricated by air (gas) and supported by hydrodynamic force generated by the rotation of the rotating shaft.
1032
[Page extract]
Understanding test types
Material testing uses a variety of methods to assess different mechanical properties. Selecting the right test depends on the intended application and relevant standards.
Examples include:
1033
[Page extract]
Simplify data analysis in force, materials and torque testing
Test calculations are the values derived from raw measurement data, such as peak force, torque angle, or modulus of elasticity. With advanced software, these are now calculated instantly and with high precision, replacing error-prone manual methods.
1034
[Page extract]
SAE USCAR-21-4
This specification defines test methods and requirements for validation of solderless crimped connections.
1035
[Page extract]
Standards for tear resistance testing
While the core principle of wing tear testing remains the same, each standard specifies unique specimen shapes, notch sizes and test speeds. Adhering to these requirements ensures results are valid and comparable.
1036
[Page extract]
ISO 8033
ISO 8033 specifies methods for the determination of the adhesion between lining and reinforcement, between cover and reinforcement, between reinforcement layers, between cover and outer lamination (thin layer of material outside the cover for protection
1037
Case study
Sachet compression test
Requirement
To compress six sachets of ketchup or mayonnaise until failure of the packaging occurred.
The peak compressive force was required as the test result.
1038
Case study
Adjustable spectacles torque test
Customised engineering example
Adlens manufacture adaptive spectacle lenses, where the optical power is adjusted by a side dial which is then removed.
1039
Case study
Insulation film stiffness testing
Customised engineering example
Familiar with three-point bending to test flexural strength properties?
1040
[Page extract]
USP <671>
Chapter 671 of USP (United States Pharmacopeia) provides standards for the functional properties of packaging systems used for solid oral dosage forms (SODF) and liquid oral dosage forms (LODF) for pharmaceuticals and dietary supplements.
1041
Event
Needle Sharpness & Puncture Resistance Testing
Hypodermic needles are tested to determine how their design influences the ease of insertion into the skin, patient pain and skin trauma.
1042
Event
Needle Sharpness & Puncture Resistance Testing
Hypodermic needles are tested to determine how their design influences the ease of insertion into the skin in order to prevent patient pain and skin trauma.
1043
Event
Compression Testing in Top Load Applications
A typical challenge in packaging, and bottling applications is trying to balance product integrity, where the container might be too weak and crush under load, and excessive raw material cost, where the container is too strong.
1044
[Page extract]
ASTM D2061
No one test determines the suitability of a zipper for a specific end use. Since the tests are inter-related more than one may be needed for a complete evaluation.
1045
Event
Essentials of Adhesion (Peel) Testing
Across many households and industries, consumers have developed a strong preference for and confidence in ‘Duct Tape’ for all types of uses and applications. This is mainly due to the adhesion strength.
1046
[Page extract]
Challenges and best practices in peel testing
Common challenges
Material variability in thickness, surface treatment, or adhesive application.
Inconsistent specimen preparation.
Operator error from misalignment or incorrect grip tension.
Best pra
1047
Case study
DVD removal force test
Requirement
The customer, a leading supplier of boxed DVD’s, had experienced a wide variation in the amount of force required to remove the DVD from the central spigot of the case.
1048
[Page extract]
Standards for extrusion testing
Although there are fewer dedicated standards for food extrusion than for plastics or metals, recognised guidelines help ensure repeatability and comparability. Examples include:
1049
Case study
Peel test of semi-rigid packaging for medical device
Customised engineering example
Our client needed to test the peeling quality of a Tyvek® paper lid used to seal a sterile, semi-rigid thermoformed plastic tray containing pre-filled syringes.
1050
Case study
Injection moulded assembly integrity
Customised engineering example
Plastic injection-moulded subassemblies are often clipped or welded together, and the integrity of the whole must be tested at several points.