computer control universal testing machine

1. introduction

The universal testing machine (UTM), also known as a universal tester, materials testing machine, materials test frame or tensometer, is used to test the tensile strength and compressive strength of materials. It can perform many standard tensile and compression tests on materials, components and structures, in other words, that it is versatile.

 

electronic universal testing machine

 

electronic universal testing machine
with hydraulic clamping 500KN/600KN

hydraulic universal testing machine 300KN-3000KN

For tensile test, the universal testing machine can measure following parameters according to different materials (not limit to the following):

Elongation: increase in the original gauge length at any moment during the test

Percentage elongation: elongation expressed as a percentage of the original gauge length

Percentage permanent elongation: increase in the original gauge length of a test piece after removal of a specified stress, expressed as a percentage of the original gauge length

Percentage elongation after fracture: permanent elongation of the gauge length after fracture, expressed as a percentage of the original gauge length

Extensometer gauge length: initial extensometer gauge length used for measurement of extension by means of an extensometer

Extension: increase in the extensometer gauge length at any moment during the test

Percentage extension/ strain: extension expressed as a percentage of the extensometer gauge length

Percentage permanent extension: increase in the extensometer gauge length, after removal of a specified stress from the test piece, expressed as a percentage of the extensometer gauge length

Percentage yield point extension: in discontinuous yielding materials, the extension between the start of the yielding and the start of uniform work-hardening, expressed as a percentage of the extensometer of the extensometer gauge length

Percentage total extension at maximum force: total extension (elastic extension plus plastic extension) at maximum force, expressed as a percentage of the extensometer gauge length

Percentage plastic extension at maximum force: plastic extension at maximum force, expressed as a percentage of the extensometer gauge length

Percentage total extension at fracture: total extension (elastic extension plus plastic extension) at the moment of fracture, expressed as a percentage of the extensometer gauge length

Maximum tensile force: highest force that the test piece withstands during the test

Stress: at any moment during the test, force divided by the original cross-sectional area of the test piece

Tensile strength: stress corresponding to the maximum force

Yield strength: when metallic material exhibits a yield phenomenon, stress corresponding to the point reached during the test at which plastic deformation occurs without any increase in the force

Upper yield strength: maximum value of stress prior to the first decrease in the force

Lower yield strength: lowest value of stress during plastic yielding, ignoring any initial transient effects

Proof strength/ plastic extension: stress at which the plastic extension is equal to a specified percentage of he extensometer gauge length

Proof strength, total extension: stress at which total extension (elastic extension plus plastic extension) is equal to a specified percentage of the extensometer gauge length

Permanent set strength: stress at which, after removal of force, a specified permanent elongation or extension, expressed respectively as a percentage of original gauge length, or extensometer gauge length, has not been exceeded.

Modulus of elasticity: quotient of change of stress and change of percentage extension in the range of evaluation, multiplied by 100%

For compression test, this universal testing machine can measure following (not limit to the following):

Compression stress,

proof strength, non-proportional compression,

proof strength, total compression,

compressive yield strength,

upper compressive yield strength,

lower compressive yield strength,

compressive strength,

compressive modulus of elasticity

The universal testing machine can also make bending and flexural test, shear test, peel test, high and low temperature test, assurance loading test, wedge test, etc. if equipped with relative test fixtures.

 

universal testing machine
for high and low temperature test

universal testing machine
 for high and low temperature test

2. features

This universal testing machine adopts two strong supports, precise load cell to measure the load. Its crosshead can move up or down at a constant speed.

This universal testing machine can program the crosshead speed or conduct cyclical testing, allow testing at a constant force, testing at constant deformation, testing at constant displacement, etc.

This testing machine can equip with extensometers to measure the extension or deformation.

According to test requirement for temperature, humidity, pressure, etc, special device, such as environmental chamber can be placed around the test specimen to do test in certain temperature, humidity or pressure.

Matched with various test fixture, like peal, puncture, tear, pneumatic grip, belt tension, etc. This UTM can be used to metal, non-metal, composite materials like rubber, steel wire, plastic, seat belt, textile character test.

Protecting functions of over load, over current, over voltage, crosshead limit moving space protection, auto stop at break.

3. software introduction

l  Easy to control and friendly interface

windows based interface, easy and fast to reach different functions, suitable for most of operators using habits. Integrated all common operation functions, like specimen information input, specimen choosing, curve plotting, data display, data process, data analysis, test operation etc., easy and convenient to operate.

l  Full digital display and computer control

Adopting remote controller, fast response and reliable to parameter gathering. Realize digital adjustment and zeroing of load, deformation and displacement as well as PID parameter adjusting.

l  Different control mode & speed setting

l  Programmable control mode

Users can program test mode according to their own requirements.

l  Load holding facility for a specific period:

Report is editable

4. specification

Model	WTD-5/10/20/50	WTD-100	WTD-200/300	WTD-500/600
Max. capacity(kN)	5/10/20/50	100	200/300	500/600
Measuring range	1%~100%FS(0.4%-100%FS)
Grade	Grade 1(Grade 0.5)
Force resolution	1/400000
Deformation measuring range	2%~100%FS
Relative error of deformation value	+/-1%(+/-0.5%
Deformation resolution	1/4000000
Force speed	0.01-50 kN/s
Deformation speed	0.01-30mm/min
Displacement speed	0.01-500mm/min (can be 1000mm/min)		0.01-300mm/min	0.01-250mm/min
Tensile fixture for round and flat specimen	Standard one set tensile fixture for round specimen, one set tensile fixture for round specimen, one set of compression platen, other test fixture can be equipped according to client’s requirement or relative test method
Extensometer	According to test materials or client’s requirement
High and low temperature test	According to relative test method or client’s requirement
Max. stroke of crossbeam	1090mm	1070mm	1140mm	1200mm
Effective tensile space (equip with metal tensile fixture)	800mm	700mm	600mm	600mm
Distance between columns	430mm	550mm	600mm	625mm
Power	220V、1.0kw	220V、2kw	220V、3kw	380V、4kw
Dim. Of loading frame（cm）	79x43x186	92x50x198	110x60x241	130x87x250
Weight	400kg	700kg	1150/1250kg	2500kg

Model	WTH-W/P300	WTH-W/P600	WTH-W/P1000	WTH-W2000
Capacity(kN)	300	600	1000	2000
structure	2 columns 2 lead screws	4 columns 2 lead screws	4 columns 2 lead screws	4 columns 2 lead screws
Measuring force range	2%-100%FS
Accuracy of load	+/-1%( or +/-0.5%)
Accuracy of deformation	+/-0.5%
Deformation measuring	Clip-on extensometer, standard gauge length, elongation 5/10/25mm
Max. tensile space(mm)	550	600	750	800
Max. compression space(mm)	450	500	600	700
Flat specimen range(mm)	0-15	0-30	0-40	20-60
Round specimen range(mm)	Dia. 10-32	Dia.13-40	Dia.13-60	Dia.35-80
Compression platen(mm)	200x200	200x200	200x200	200x200
Bending support roller distance(mm)	350	350	350	350
Bending roller width	100mm	140mm	140mm	140mm
Bending roller dia.(mm)	30	30	30	50
Ram stroke(mm)	250	250	250	250
Clamping mode	Hydraulic automatic
Dim. Of loading frame(mm)	910x550x2370		960x650x2600	1160x1100x2600
Dim of control cabinet	1100x700x950mm
Weigth	2600kg	2600kg	3400kg	6500kg
Standard accessories	Load frame, servo oil source, control box, servo valve, Japan Nachi Pump; Load cell, liner displacement sensor, tensile test Jaws, compression platen, bending test accessory, extensometer PC, printer, Professional software, tools, anchor bolts, manual
Key	WTH-W series: computer control servo hydraulic universal testing machine WTH-P series: computer display hydraulic universal testing machine