First things first, what is abrasion? This is a factor that promotes the rupture of materials such as ceramics, rubber, metals, coating, e.t.c. the rate of abrasion of a material can be tested using a procedure known as an abrasion test. This test provides a result that assists the user in comparing a material as well as its coating in order to determine its life or durability.
Why is it necessary to test for abrasion?
Abrasion testing is typically utilized to test a product’s resistance to abrasion when placed within a specific environment. The essence of this procedure rests upon investigating the rank of a given material in ascending order in terms of how it will happen within the abrasive environment. The proportion of content loss determined from the test sample that is placed under an abrasive environment is thereafter compared to the original substance. This comparison is what shall give a material’s worth in case abrasion is the main factor that causes the material to rupture.
Methods of testing abrasion
When talking about a product’s durability, it is important to determine the effects of abrasion. The reason is that is causes unwanted effects on the labels and packaging during transportation, warehousing and other forms of storage. Common terms used to describe abrasion include scuffing, scratching, marring, wear and tear, rubbing, etc. all abrasion properties can get tested through following procedural methodologies for measuring a substance’s resistance to abrasion.
Some of the typical abrasion tests are listed below:
The Taber Method
This is a fast and relatively inexpensive method design to compare the rate of mass loss and wear of a material or coating. A standard taper abrasion test comprises of a specimen resembling a disk that is constantly placed in contact with an abrasive spinning wheel. Predetermined forces and cycles are utilized to measure the rate of wear. Taber abrasion is a simple and quick method of measuring the resistance to wear and provides sufficient comparable data at a relatively cheap price. It also provides a side-by-side comparison of various coatings or materials in order to evaluate the type of material that has a better resistance to wear under a simulation of accelerated abrasive conditions.
Block-on-ring wear testing
This method of wear testing entails applying a normal load onto a metallic test block that is at the same time subjected to an abrasive, sliding motion against a metal ring. Typically, this test is conducted according to the ASTM G77 standard. It is normally used to categorize material pairs on the basis of volume loss for both the ring and the block.
pin-on-Disk Wear Testing
This testing uses two materials to measure a range of wear properties. Such a test is suitable for comparing the tribological properties of two materials. The properties entail wear and tear as well as frictional coefficients of the material pair. Likewise, the method is applicable when attempting to choose the right material for the manufacturing, medical or any other application.
Coatings and ink on printed membrane switches usually get affected by repetitive abrasion forces, particularly by the fingers. Other conditions that promote observable wear include, wiping, cleaning, rubbing, storage, shipping, and accidental damage. This type of testing provides for the determination of the level of observable wear on a given substance by subjecting coatings and inks repetitively to abrasive forces.
Custom abrasion & wear testing
Custom abrasion wear and testing are commonly applied whenever a client has a non-standardized abrasion testing procedure or sample that they desire to test. Custom abrasion testing might prove to be the best option in case you require certain real-life cycle expectation or specific data recognition on your chosen material.