On this video Engr. Erish V. De Guzman discussed the parts of Universal Testing Machine and its uses.
#UTM #UniversalTestingMachine #MaterialTesting
A Universal Testing Machine is an electric machine used in Engineering where the main mechanical properties of a given specimen of a construction material are being tested. In UTM, we test the Mechanical properties like Tension, Compression, the Bending capacity and some other related properties of the materials. The usual process of the UTM is pulling, compressing, bending or stretching materials until they break. Materials could be metal or non-metal. These different tests determine the quality of the material as well as how suitable it is for a particular use.
The universal testing machine is used primarily by laboratories that manufacture or mold various plastics.
Additional pointers, there are variety of terms in the industry that are used to call the UTM. Most common terms are “tensile tester”, “compression tester” and “bend tester”. While some in the industry call it as the “materials testing machine” or “materials test frame”, but one common term there is for the UTM is the “Universal Tester”.
As a laboratory technician or a civil engineer, before operating the Universal Testing Machine,
of course, as you can see, the machine has different parts, and those parts have different functions,
you should know first what are the parts, the importance of each parts, how to use and when to use them. The Universal Testing Machine has two major parts: the Host Machine and the Machine Controller.
The host machine is cylinder-underneath, a hydraulic loading, and hydraulic clamping specimen. This machine operates or functions easily and it reads correctly.
The host machine represents where the exact section the test should be conducted.
For the tensile strength test, it should be conducted at the tension section using two-flat/round grip plate, upper and lower clamp. The tension section is in the upper part of the host machine.
The compressive and flexural strength test, should be conducted at the compression and flexural section, the lower part of the host machine. For the compressive and flexural test, we use the upper and lower plate, wheel load and bending platform.
These are the minor parts:
The cylinder was fixed on bottom support with bolts.
The piston was fixed on work table, while work table supports column.
When piston is moving; work table, column and upper crosshead also moves.
Screw cross over work table, down end was fixed on bottom, up end was connected with up crosshead.
There is a remote box / controller button at the lower crosshead so it is easy to adjust the original test space and can clamp the upper and lower clamp automatically and column lift upper crosshead, to achieve tensile, compression and bending test.
The machine controller is the one that processes the data of materials being tested, it storages and displays the test data. This machine also provides the illustration and graph of the curves using the computer. The printer here can print the test report and draw the test curve of the material.
These are the minor parts:
On the left-upwards side of the control machine, there are two power switches additional,
the bigger one with mushroom head (Stop Button) is the emergency stop switch, and the other one (Start/Stop or On/Off Button) is the power switch.
The two hand wheels of “Load and Unload are used to control loading and unloading hydraulic oil.
“Pump” is oil pump switch to startup oil pump motor unit (inside controller cabinet).
The button of “Jaw” is tensile grip switch, the tensile grip and remote box will be able to work after pressing Jaw Button.
When clamping samples, take note that the upper grip should first clamp and then lower grip will be next, otherwise the hydraulic clamps will not work well. When doing tensile test, please turn off the tensile grip button (Jaw) to keep the electrical valve could working more long time.
Working Condition
Before using Universal Testing Machine, certain condition that are listed below should be observe first to ensure the safety of operator.
1. Room Temperature at least 10ºC to 35ºC.
2. Relative humidity not more that 80%.
3. No quaky or vibration condition
4. No caustic medium around
5. Level installation on steady base, level degree no more than 0.2/1000.
6. Power Supply: 3-Phase 220V, 50/60Hz, 2.5KW.
#ErishDeGuzman #Erish Erish De Guzman
27 авг 2020
