How Accurate Are Digital Portable Hardness Testers?

Testing large workpieces using portable hardness testing devices has a fair side of advantages, but it does raise a question about accuracy. Read to find more.

A research paper submitted by Polish and Slovakian researchers focused on the technical aspect of portable hardness testers, mainly determining their accuracy and reliability. As the paper deals with measuring hardness by 4 diverse methods of Brinell, Vickers, Rockwell, and Leeb, it uses 2 kinds of hardness testers – static & dynamic (portable).

The research covers table hardness testers and digital portable hardness tester for proper comparisons. Following the methodology of research, results and discussions, and conclusion, it won’t be hard to disseminate the fact that portable hardness testers have still a long way to fulfill accuracy qualifications, chiefly due to measuring methods and requirements of converting the measured Leeb hardness to other scales.

So, shall it be used or not? Even manufacturers have accepted that these are near-accurate devices that are designed for working large workpieces outside the laboratory, which cannot be tested using a table hardness tester. From testing large specimens to measuring hardness in various directions, these testers help determine valuable results. Moreover, a rebound hardness tester incurs less cost for hardness testing. Additional benefits may follow the suit, depending on the features offered in a specific model or design from a manufacturer.

Individuals and companies can perform research on these testing devices available in the marketplace and compare their efficiencies, features, accuracy-levels, etc. for reaching the right decision.

Comments

UCI Hardness Tester: The Most Reliable Modern Hardness Tester Available Now

The term “Hardness” is defined as the ability of any material to resist indentation. It can be determined by measuring the depth of the area of the indentation. Hardness is not a physical property of material rather it is simply a response to a specific test. So, the tensile strength of any material can be determined by testing its hardness using various tools. A traditional hardness tester is gigantic, bulky, and unportable. This is why materials have to be brought to the tester if the measurement has to be done urgently. But, some metals are not easily transportable. In such cases, portable hardness testers are very useful. One such amazing innovation is the ultrasonic hardness tester. This instrument is light-weight and has a compact size. Therefore, users can bring the tester and can measure metals anywhere they want. The ultrasonic contact impedance hardness tester or simply known as UCI hardness tester is a non-destructive tool as the measurement is done using ultrasonic vibrati...

Ultrasonic Hardness Tester – Correlation With A Bench-top Tester

Paraphrasing technical definitions shouldn’t come at a cost of understanding. However, this doesn’t mean portable testers are inaccurate & unable to match the benchmark standards. Over the years, the portable hardness testers have improved. Though it finds amid a controversy due to different perspectives, there’s no apparent need for undermining the efficacy of portable hardness testers. As facts would have it, the use of device probe (ball, cone, or pyramid) helps in testing the hardness and performances have comparatively increased. Each test piece differs for variables like material hardness properties, elastic properties, behavior, etc. Therefore, a proper correlation should be established with a bench-top tester. A modern ultrasonic hardness tester equips LCD, microscopic indentation, higher calibration efficiency, and lots more. Widely used for measuring the hardness of test pieces like flange edges, sheets, molds, turbine rotor, wheel, shaft hardness, etc., the ...

A Quick Brief Guide To Ultrasonic Contact Impedance Testing and Tester

UCI technology helps in hardness testing of surfaces of thin & small workpieces. While portable hardness testing equipment is an immediate need for testing cumbersome parts of an immovable workpiece, the UCI or Ultrasonic Contact Impedance technology facilitates enables testing of surfaces of small & thin workpieces. Thin workpieces could be difficult to deal with. This is the reason why UCI tester is preferred to test those special surfaces. These units, which coul portable Rockwell tester d be as thin as 2mm, are either hard or soft. Using UCI technology, professionals can determine the hardness value of both hard & soft workpieces. Both manual and motorized probe systems are employed for hardness testing. Surfaces of very thin coatings, platings, high polish finish, etc. are tested using motorized probe systems. What is the UCI method? The Ultrasonic Contact Impedance was invented by Claus Kleesattel, which helped in the testing of thin workpieces with great acc...

Portable Hardness Testers

Search This Blog