Learn all you need to know about flexural testing, bond strength testing, compression testing, creep testing and many other testing types.
Adhesion Testing Adhesion is the bond strength measurement of a coating to a substrate. When an adhesive is bonded to an item or surface, numerous physical, mechanical and chemical forces come into play, which may have an effect on each other. These need to be tested before a product can be used. Determination of the failure point […] Read More... Bending/Flexural Testing Generally, there are two types of bending tests: 3-point bend and 4-point bend. The materials that are tested using the flex test method vary from metal, plastic, wood, laminates, particle board, dry wall, ceramic tile to glass. Bending tests vary greatly based on the product being tested. There are a variety of industry standards which […] Read More... Bond Strength Testing Bond strength generally involves determining the stress required to rupture a bond formed by an adhesive between two metal blocks. Often, the test involves the measurement of the shear and flexural bond strength of a bonding agent or a comparison of bonding agents under varying environmental conditions. The test may compare the fractured surface produced […] Read More... Break Strength Testing One of the most common of all testing requirements is the determination of break strength. Break strength is generally the tensile or compressive load required to fracture or to cause the sample to fail. To determine the failure point or break strength, you will need to define what a break is (break detector). Generally, there […] Read More... Coefficient of Friction Testing Coefficient of friction (COF) is the maximum value of the frictional force divided by the normal force. Coefficient of friction (COF) testing is used for a variety of materials from lubricants, to films to household items (ceramic tiles) to determine the frictional characteristics of a material. It is generally determined to be the ease by […] Read More... Compression Testing Compression testing is a very common testing method that is used to establish the compressive force or crush resistance of a material and the ability of the material to recover after a specified compressive force is applied and even held over a defined period of time. Compression tests are used to determine the material behaviour […] Read More... Creep Testing Creep testing should be conducted using a material tester, since speed control is critical to measuring the deformation over time. This test method is used to determine a sample’s creep properties when subjected to a prolonged tensile or compressive load at a constant temperature. The rate of deformation of a sample material to stress at […] Read More... Crush Resistance Testing Crush resistance testing involves the measurement of a compressive load to a point when a sample deforms, fractures, shatters or collapses. This type of test may be applied to a variety of products including corrugated cardboard, glass, bearings, bricks, concrete, or any sample where crush resistance is important. This is a common test used in […] Read More... Deformation Testing Deformation testing evaluates the effect that load has on the shape of a sample. It is the measurement of a sample material to withstand a permanent deformation and/or the ability of the sample to return to its original shape after deforming. Deformation is measured as the percent change in height of a sample, under a […] Read More... Delamination/Peel Strength Testing A climbing drum test is a typical peel testing method used to determine the delamination characteristics of adhesives used to bond different materials together. This test covers the determination of the peel resistance of adhesive bonds between a relatively flexible adherent and the relatively flexible facing of a sandwich structure and its core. When a […] Read More... Ductility Testing Ductility involves determining the extent by which a material can withstand plastic deformation without rupture. Bend test for ductility provides a simple way to evaluate the quality of materials by their ability to resist cracking or other surface irregularities during one continuous bend. With a ductile fracture, there is a considerable amount of plastic deformation […] Read More... Durability Testing The durability performance of various adhesives is performed to assess the overall durability of a given adhesive. Lap-shear joints should be tested under a range of stress, relative humidity and temperature. Tests may also be used to determine the affects of various surface preparations or substrates on durability of adhesive joints. Read More... Elastic Limit Testing Determining the elastic limit of a material involves the measurement of the greatest stress that can be applied to a sample without causing permanent deformation. Metals or other rigid materials with a straight-line portion in their stress/strain curve have an elastic limit approximately equal to the proportional limit. Arbitrary approximation of the elastic limit of […] Read More... Elongation Testing The increase in a sample’s gauge length measured after a rupture or break divided by the sample’s original gauge length is referred to as elongation. The greater the elongation, the higher the ductility or elasticity of the material. Elongation cannot be used to predict the behaviour of materials subjected to sudden or repeated loading. Some […] Read More... Flexural Strength Testing Flexural testing is used to determine the flex or bending properties of a material. Sometimes referred to as a transverse beam test, it involves placing a sample between two points or supports and initiating a load using a third point or with two points which are respectively call 3-Point Bend and 4-Point Bend testing. Maximum […] Read More... Friction Testing Coefficient of Friction (COF) is the maximum value of the frictional force divided by the normal force. Coefficient of Friction (COF) testing is used for a variety of materials from lubricants, to films and household items (ceramic tiles) to determine the frictional characteristics of a material. It is generally determined to be the ease by […] Read More... Modulus of Elasticity Testing Modulus of elasticity (or Young’s Modulus) is a measurement of the rate of change of strain as a function of stress. It represents the slope of the straight-line portion of a stress-strain curve. With respect to tensile testing, it may be referred to as Tensile Modulus. This method of testing is used to determine a […] Read More... Peel Strength Testing Peel strength is generally used to measure the bond strength of a material, typically an adhesive. Peel strength is the average load per unit width of bond line required to separate bonded materials where the angle of separation is 180 degrees. Typical graph showing a peel strength test: Read More... Puncture Testing Puncture strength testing Puncture strength tests are used to determine the puncture or rupture characteristics of a material. This is generally a compressive test where a material is compressed by a probe or other type of device until the material ruptures or until an elongation limit is achieved. Puncture testing is commonly used to determine […] Read More... Rupture Testing Rupture testing, synonymous with puncture strength testing, is used to determine the puncture or rupture characteristics of a material. This is generally a compressive test, when a material is compressed by a probe or other type of device until the material ruptures or until an elongation limit is achieved. Rupture testing is commonly used to […] Read More... Shear Strength Testing Shear testing is performed to determine the shear strength of a material. It measures the maximum shear stress that may be sustained before a material will rupture. Shear is typically reported as MPa (psi) based on the area of the sheared edge. Shear testing is commonly used with adhesives and can be used in either […] Read More... Stress-Relaxation Testing This test method is used to determine a sample’s creep properties when subjected to a prolonged tensile or compressive load at a constant temperature. The rate of deformation of a sample to stress at a constant temperature is known as the creep rate. It is the slope created by the creep vs. time. Creep generally […] Read More... Tear Resistance Testing Tear resistance testing can be found in plastic film, paper and textile industries. Tear resistance is the measurement of a sample’s ability to resist tearing. Tear resistance can be impacted considerably by the speed of the test, e.g. test speed used in generate the tear. Tear propagation resistance for the purpose of acceptance testing is […] Read More... Tear Strength Testing Tear strength is the tensile force required to rupture a pre-slit woven fabric sample under controlled conditions. Edge tearing strength of paper is the load required to tear a sample over a V-notch fixture. Typical graph showing a tear strength test: Read More... Tensile Testing One of the most common testing methods, tensile testing, is used to determine the behavior of a sample while an axial stretching load is applied. These types of tests may be performed under ambient or controlled (heating or cooling) conditions to determine the tensile properties of a material. Tensile testing is performed on a variety […] Read More... Toughness Testing Toughness is the measurement of a material’s resistance to break, fracture or rupture. It is usually measured in units of energy or work. Typical graph showing a toughness test: Read More... Young’s Modulus Testing ‘Young’s Modulus’ or modulus of elasticity is a measurement of the rate of change of strain as a function of stress. It represents the slope of the straight-line portion of a stress-strain curve. With respect to tensile testing, it may be referred to as Tensile Modulus. This method of testing is used to determine a […] Read More...