Moiz Computerized Universal Testing Machine is designed for testing metals and other materials under tension, compression bending, transverse and shear loads. Hardness test on metals can also conducted.
Principal of Operation: Operation of the machine is by hydraulic transmission of load from the test specimen through pressure transducer to a separately house load indicator. The system is ideal since it replaces transmission of load through levers and knife edges, which are prone to wear and damage due to shock on rupture of test pieces. Load is applied by a hydrostatically lubricated ram. Main cylinder pressure is transmitted to the pressure transducer housed in the control panel. The transducer gives the signal to the electronic display unit corresponding to the load exerted by the main ram.
Simultaneously the digital electronic fitted on the straining unit gives the mechanical displacement to the electronic display unit. Both the signals are processed by the microprocessor and load and displacement is displayed on the digital readouts simultaneously.
Machine consists : This consists of a cylinder motor with chain and sprocket drive and a table coupled with the ram of the hydraulic cylinder, mounted on to a robust base. The cylinder and the ram are individually lapped to eliminate friction. The upper crosshead is rigidly fixed to the table by two strenthened columns.The lower crosshead is connected to two screwed columns which are driven by a motor. Axial loading of the ram is ensured by relieving the cylinder and ram of any possible side loading by the provision of ball seating. An displacement scale with a minimum graduation of 1mm, is provided to measure the deformation of the specimen. Tension test is conducted by gripping the test specimen between the upper and lower cross-heads and the table. The lower cross-head can be raised or lowered rapidly by operating the screwed columns, thus facilitating ease of fixing of the test specimen. The control Panel consists of a power pack complete with drive motor and an oil tank, control valves and electronic display unit
Power Pack: The power pack generates the maximum pressure of 200 kgf/cm2 . The hydraulic pump provides continuously non-pulsating oil flow. Hence the load application is very smooth
Hydraulic Controls: Hand operated wheels are used to control the flow to and from the hydraulic cylinder. The regulation of oil flow is infinitely variable. Incorporated in the hydraulic system is a regulating valve, which maintains a practically constant rate of piston movement. Control by this valve allows extensometer readings to be taken.
Electronic Control Unit : Moiz Engineering Lab reserves the right to change the design without any prior notices for technical development Microprocessor based panel incorporating state of art technology wiyh following features.
The UNIVERSAL 2001 - UTM COMP series control panel can be hooked to any PC using RS-232 communication port. Moiz offers different exhaustive application, Window based software packages with real time graph on PC to enable the user to effectively evaluated different parameters.
Accuracy and Calibration : All Moiz Computerized Universal Testing Machines are closely controlled for sensitivity, accuracy, and calibration during every stage of manufacture. Every machine is then calibrated over each of its measuring ranges in accordance with the procedure laid down in British Standards 1610 : Part 1 : 1992 and IS : 1828 : Part 1 : 1991. Moiz Computerized Universal Testing Machines comply with Grade "A" of BS : 1610 : Part 1 : 1992 and Class 1 of IS : 1828 : Part 1 : 1991. An accuracy of ±1% is guaranteed from 2% to 100% of the capacity of the machine. Below 20% of the selected range, the maximum permissible error is 0.2% of the full-load reading.