2000KN tensile stress test device

2000KN tensile stress test device

1. Brief introduction

l  Suitable for tension, compress, shear, peeling, tear, test

l  Attractive appearance, easy operating, stable and reliable

l  Dual test space, upper space for tension test, bottom space for compress test

l  Crossbeam speed can reach up to 1000mm/min, suitable for most test speed

l  Low noise during test

l  Suitable for industries of metal manufacturing, non-metal manufacturing, industrial and mining enterprises, technical supervision, commodity inspection and arbitration and other departments

2. Relative test method

GB/T 2611-2007 general requirement for testing machines

GB/T 3159-2008 hydraulic universal testing machines

GB/T 16826-2008 electro-hydraulic servo universal testing machine

JJG 1063-2010 electro-hydraulic servo universal testing machines

GB/T 16825.1-2008  verification of static uniaxial testing machines---part 1: tension/ compression testing machines---verification and calibration of the force measuring system

ISO 7500-1:2004 metallic materials-verification of static uniaxial testing machine-Part 1: tension/compression testing machines-verification and calibration of the force-measuring system

JJG 139-1999 tension, compression and universal testing machines

JB/T 6146-2007 specification for the extensometers

GB/T 228.1-2010 metallic materials---tensile testing---part 1: method of test at room temperature

ISO 6892-1:2016 metallic materials-tensile testing-part 1: method of test at room temperature

GB/T 7314-2017 metallic materials--- compression test method at room temperature

GB/T 232-2010 metallic materials---bend test

ISO 7438:2016 metallic materials-bend test

3. Specifications

1

Force   capacity

2000KN

2

Force   measuring range

1%-100%

3

Accuracy

±0.5% or ±1%

4

Force   resolution

±1/500000

5

Deformation   measuring range

1%-100%FS

6

Accuracy   of deformation value

±0.5% or ±1%

7

Accuracy   of displacement value

±0.5% or ±1%

8

Stress   rate

1-45Mpa/s

9

Strain   rate

0.001-0.5mm/s

10

Displacement   rate

0.02-3mm/s

11

Adjusting   mode of lower crossbeam

Chain   transmission

12

Tension   space

750mm

13

Compression   space

700mm

14

Distance   between columns

600mm

15

Piston   stroke

250mm

16

Dimension

950x620x3000mm

17

Grips   for round specimen

Ф20-70mm

18

Grips   for flat specimen

0-60mm

19

Overall   power

4.5KW

20

Weight

6500kg

4. Standard configuration

1

Main   loading frame

1   set

2

Full   digital controller

1   set

3

Oil   source cabinet

1   set

4

Oil   pressure sensor

1   pc

5

Displacement   sensor

1   pc

6

Grips   for round specimen Ф20-70mm

1   set

7

Grips   for flat specimen 0-60mm

1   set

8

Compress   platen

1   set

5.Software introduction

5.1 auto stop: crossbeam auto stop when sample break

5.2 auto save: test parameters, test curves and test results can be auto saved after test

5.3 speed adjusting: speed of crossbeam can be adjusted during test automatically or manually

5.4 auto calibrating: system can do auto calibrating

5.5 easy operate: computer software can auto finish test procedures, measuring, displaying and analyze test data.

5.6 batch test:  for test sample with same parameters, test can be finished in order after one time setting

5.7 display mode: data and curves can be displayed during test in real time

5.8 curves scanning: test curves can be re-analyzed after test, test date of each point on the test curve can be displayed via mouse click

5.9 curve choosing: stress-strain curve, force-displacement curve, force-time curve, displacement-time curve can be chosen accords with test requirement.

5.10 test report: test report can be printed in different format

5.11 stroke protection: mechanism and program control protecting functions

5.12 Over load protecting: when force is more than 3%-5%of rated capacity, machine will auto stop.

 

How to Select the Right Tensile, Compression, Bending, Shear, Peel, and Tear Testing Machine: Calculation Formulas with Examples

Selecting the appropriate testing machine for tensile, compression, bending, shear, peel, and tear tests requires careful consideration of multiple factors, including the force range, specimen dimensions, test standards, and machine capabilities. Below are the key calculation formulas to help determine the necessary machine specifications, along with examples for better understanding.

1. Tensile Testing Machine Selection

Tensile testing machines measure the maximum tensile strength and elongation of materials.

Key Formula:

Fmaxmax × A

Where:

Fmax = Maximum required force (N)

σmax = Ultimate tensile strength of the material (MPa)

A = Cross-sectional area of the specimen (mm²)

Example: For a steel specimen with σmax =400MPa and cross-sectional area A =100mm²:

Fmax=400 × 100=40,000N (40kN)

A 50 kN tensile testing machine would be suitable.

 

2. Compression Testing Machine Selection

Compression tests determine a material's resistance to compressive forces.

Key Formula:

Fmaxc × A

 

Where:

Fmax = Maximum required force (N)

σc = Compressive strength of the material (MPa)

A = Cross-sectional area of the specimen (mm²)

Example: For a concrete cube with σc =30MPa and A =1502=22,500mm²:

Fmax=30 × 22,500=675,000N (675kN)

A 1000 kN compression testing machine would be ideal.

 

3. Bending Testing Machine Selection

Bending tests evaluate the flexural strength of materials.

Key Formula for Three-Point Bending:

image.png

Where:

σf = Flexural stress (MPa)

F= Applied force (N)

L= Span length (mm)

b= Width of the specimen (mm)

h= Thickness of the specimen (mm)

Example: For a wooden beam with L=500mm, b=50mm, h=25mm, and requiring a stress of 10 MPa:

image.png

A 5 kN bending tester would be suitable.

4. Shear Testing Machine Selection

Shear tests determine the shear strength of materials.

Key Formula:

Fmax=τ × A

Where:

Fmax = Maximum shear force (N)

τ= Shear strength of the material (MPa)

A = Shear area (mm²)

Example: For an aluminum sheet with τ=90 MPa and A=200mm²:

Fmax=90×200=18,000N(18kN)

A 20 kN shear testing machine is recommended.

 

5. Peel Testing Machine Selection

Peel tests measure the adhesion strength between bonded materials.

Key Formula:

image.png

Where:

P= Peel strength (N/mm)

F= Measured force (N)

W= Width of the specimen (mm)

Example: For a tape with F=50N and W=25mm:

image.png

A peel testing machine with at least 5 N force capacity is required.

 

6. Tear Testing Machine Selection

Tear tests determine the resistance of a material to tearing forces.

Key Formula:

image.png

Where:

Ftear= Tear strength (N/mm)

F= Measured force (N)

t= Thickness of the specimen (mm)

Example: For a rubber sheet with F=100N and t=2mm:

image.png 

A tear testing machine with 100 N capacity is needed.

 

When selecting a testing machine, ensure that the maximum force capacity of the machine is at least 1.2 to 1.5 times the calculated force to account for safety margins and unexpected variations. Additionally, consider compliance with relevant test standards (ASTM, ISO, GB, EN, JIS) and machine features such as speed control, data acquisition, and test automation.

By using the above formulas and examples, engineers and manufacturers can accurately determine the appropriate testing machine specifications for their specific material and application requirements.