Norner is a laboratory with more than 40 years of industrial experience in material testing of plastics as well as product and application development which ensure high competence for our wide range of test methods.
The material testing laboratory characterise mechanical and other physical properties of plastic materials and products. This enable our customers to verify product performance and understand their strength and weakness.
The material testing services cover important features like:
The compressive strength of plastics and rubbers determines the behaviour of such materials under specified loads and temperature conditions. The methods can be used to determine; Compressive stress and strain, elastic limitations, yield point and yield strength.
ISO 815-1 - Compression set test of rubber at ambient or elevated temperatures
ASTM D695 - Compressive Properties of Rigid Plastics
Fatigue is the weakening of a material caused by repeatedly applied loads. It is the progressive and localized structural damage that occurs when a material is subjected to cyclic loading. The nominal maximum stress values that cause such damage may be much less than the strength of the material typically quoted as the ultimate tensile or yield limit.
Factors that affect fatigue failure are cyclic stress state, geometry, surface quality, material type, residual stresses, size and distribution of internal defects, direction of loading, temperature, etc.
Internal method, various standards performed on BOSE ElectroForce 3330
Plastics, elastomers and rubbers have a wide range of hardness ranging from soft elastomeric materials to hard and stiff polymers like polystyrene (PS) or Poly(methyl methacrylate) (PMMA). It is important to quantitatively measure the material hardness.
Plastics can become subjected to rapid stress or impact loads and it is important to quantify how different plastic materials can withstand such impact loads. Two of the most common methods are the so-called Izod and Charpy (pendulum) impact tests.
ISO 6603-2 - Instrumented Falling weight (IFW)
ISO 179-1 - Charpy Impact strength, unnotched or notch A, B or C
ISO 180 - Izod Impact strength, unnotched or notch A, B
Long term behaviour of plastic material under stress is a critical property in several applications. Plastic components in applications like infrastructure or automotive often need to withstand a certain stress over very long time. Also in packaging application this is relevant in some cases.
ISO 899-1 - Tensile creep behaviour
ISO 16770 - FNCT Full notch creep test (FNCT)
ASTM D 1693 - ESCR Bell test (environmental stress cracking - method B)
The optical properties of polymers, including haze, gloss, and transparency as well as the colour, are critical to many applications of commercial plastics. The transmittance of light determined by reflection, absorption and scattering. Plastic materials can be transparent, opaque or translucent. Different plastics also absorb light differently, which can also be influenced by the additives.
ASTM D1003 - Haze, Transmittance and Clarity
DIN EN ISO 2813, ASTM D 2457 and ASTM D 523 - Gloss
The strength and stiffness of plastics are important for the design of products and parts in order to predict their performance under stress. This is especially important in structural, load bearing applications. Plastic materials can be stiff, rigid and strong or opposite and the final product can furthermore be isotropic or anisotropic. There are a wide range of methods to test and describe such mechanical properties.
ISO 527-1/2 - Determination of tensile properties
ASTM D638 - Tensile Properties of Plastics
ASTM D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers
ISO37 - Tensile Testing of Rubber, vulcanized or thermoplastic
ISO 178 - Determination of flexural properties, e.g. modulus
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