How to Choose Vertical Tensile Tester?
How to Know What Tensile Tester or Universal Testing ...
How to Know What Tensile Tester or Universal Testing Machine to Buy
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What are you testing with your testing machine?
This is one of the most important starting points when searching for a universal testing machine (UTM).
Material? Any specific ASTM, ISO or specifications you are testing to? Do are testing flat or round specimens?
Product? Full product test or assemblies? Push out test or pull out test?
Tension?
Compression?
Tension & Compression?
What force capacity machine are you looking for?
This is based on how much force it is going to take to test your samples to failure or a given proof load. Machines are rated in either Pound Force (LBF) or Kilonewton (kN).
How much horizontal and vertical opening do you need to test your part?
Different machines have different horizontal and vertical openings depending on make, model, capacity, and type. Depending on the size of the test parts and the fixturing required, an extra tall or extra wide machine may be necessary.
Do you want an Electromechanical (Screw Driven) or Hydraulic Testing Machine? Pros and Cons of Electromechanical (Screw Driven) vs. Hydraulic.
Screw Driven &#; Electromechanical Testing Machine
In mechanical testing there are two different classes of tensile testing machines; Screw driven, also known as electromechanical, and hydraulic.
Electromechanical (screw driven) tensile testers have recently become popular over the older hydraulic systems. An electromechanical machine is often quieter, takes up less space, is easier to move around, runs on less overall power, and requires less maintenance when compared to a hydraulic testing machine using a Hydraulic Power Unit (HPU).
The electromechanical or screw driven test frames typically use an electric motor and two elevation screws to run the crosshead up and down. The pros of the electromechanical test machines are that they offer a large range of test speeds by changing the speed of the motor. They also provide for longer crosshead travel distances (stroke) of up to 100 inches or more. Screw Driven machines are known for speed and position accuracy.
Furthermore, on a screw driven machine, due to the load cell arrangement under the crosshead, it is easier to adapt a variety of tooling and accessories (including grips, custom fixtures, additional load cells, environmental chambers) Compared to a hydraulic machine that is more difficult to fixture due to the dual test space nature of their design. Tension testing is performed in the top window (between top crosshead and middle crosshead) and compression testing is in the bottom window (between the middle crosshead and the table).
Cons of electromechanical are they are more expensive per force capacity compared to hydraulic machines (price per capacity). For example, a 60,000 Lbf (300kN) screw driven machine would be quite a bit more expensive compared to an equal force capacity hydraulic machine. They are also not as rugged and are more sensitive to debris and dirty environments than a hydraulic machine.
Hydraulic
Hydraulic testing machines load frames are extremely robust and rugged. With today&#;s modern servo hydraulic technology, they have become very accurate in load and position control. These testing machines incorporate a single or dual direction piston to move the table and attached top crosshead to apply the force.
One disadvantage of a hydraulic tensile tester is the test travel is limited by the piston stroke, which is typically 6-9 inches. Furthermore, hydraulic machines are much more cost effective when the need arises for generating high forces, normally 60,000 (Lbf) and more. Many times hydraulics are the only option when testing above 120K (600 kN).
Frank Bacon Machinery computerizes both hydraulic and screw driven test machines, offering control with servo motors or servo valves controlling the machine&#;s test speed/rate. Both may have the capability to control testing speed as measured by load rate, position rate, and strain rate.
Dual Space vs. Uni Space Machine Design
There are 3 main types of tensile tester design; Uni-Space, Dual Space, and Research Grade Dual Space.
Uni-Space tension and compression testing is performed below the moving crosshead. This is the most common for Screw Driven machines.
Dual Space machines perform tension in the upper window and compression in the lower window. Most commonly seen on hydraulic machines.
Research Grade Dual Space machines are able to do both tension and compression in both upper and lower windows.
What fixturing and tooling do you need?
Fixture and tooling will be dependent on the type of testing you will be performing. Many of the ASTM, ISO testing have fixtures called for in the procedures. A universal testing machine UTM can perform thousands of different tests depending on the fixture. It is crucial to call a Frank Bacon Sales engineer to discuss the many possibilities out there.
Depending on your answers above you may need one of the following machines you can find in our extensive inventory at Frank Bacon Machinery Sales.
We offer Tinius Olsen, Instron, MTS, United and Frank Bacon Machinery etc. in various models with customization available.
We offer full remanufacturing and warranty on all makes and models.
If you have any questions or are looking for a tensile tester please contact a sales engineer at Frank Bacon. We will walk you through the whole process and give you a customized turnkey machine.
: 586.756.
Toll Free: 800- 394-
Click here to view our Tensile Tester Inventory
How to Choose the Right Tensile Tester (Universal Testing ...
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How is tensile strength determined?
Tensile testing, also called tensile testing, is a fundamental material science and engineering test in which a sample is subjected to controlled tension until it fails. The properties directly measured by the tensile test are ultimate tensile strength, breaking strength, maximum elongation and area reduction. From these measurements, the following properties can also be determined: Young's modulus, Poisson's ratio, yield strength, and strain hardening properties. Uniaxial tensile testing is most commonly used to obtain the mechanical properties of isotropic materials. Some materials use biaxial tensile testing. The main difference between these testing machines is how the load is applied to the material.
What is the standard for tensile test?
For different materials, there are many International and domestic test standards for manufacturer or third party test lab performing. Below is some regular test standards for textile tensile strength test.
Item
No.
Standard
Standard Name
Speed
mm/min
Clamp distance
(mm)
Sample size
(W×L)mm
China Standard
Yarn
1
2
GB/T
FZ/T
Determination of breaking strength and breaking elongation of single yarn.
Test method for elasticity of spandex yarn
500
50
500
500
&#;500
&#;500
Garment
3
4
5
FZ/T .1
FZ/T
FZ/T
Test method for peel strength of clothing using adhesive interlining
Test method for degree of detachment of wool woven fabric
Test method for the strength of the underarm seams of knitted tops
100
50
200
50
&#;75
100
25×150
100×175
According to standard
Fabric material
6
7
8
9
10
11
12
13
14
15
16
17
18
GB/T .1
GB/T .1
GB/T .2
GB/T .2
GB/T .3
GB/T .4
GB/T .5
FZ/T
FZ/T
GB/T .1
GB/T .2
GB/T .3
FZ/T
Determination of breaking strength and breaking elongation (strip method)
Determination of breaking strength and breaking elongation (strip method)
Determination of breaking strength (grab sample method)
Determination of the tearing strength of trouser-shaped specimens (single seam)
Determination of the tearing strength of trapezoidal specimens
Determination of the tearing strength of tongue-shaped specimens (double slits)
Determination of tear strength of single seam of wing-shaped specimen
Determination of seam strength and expansion of knitted fabrics and elastic woven fabrics
Ball burst method
Test method for tensile elastic recovery rate of knitted fabrics
Determination of yarn slip resistance at seams of woven fabrics. Fixed slip method
Determination of yarn slip resistance at seams of woven fabrics
Determination of yarn slip resistance at seams of woven fabrics. Needle clamp method
Determination of seam strength and elongation of knitted fabrics and elastic woven fabrics. Grab sample stretch method
20
100
50
100
100
100
100
100
100
50
50
50
300
100
200
100
100
25
100
100
&#;
Additional resources:Ultrasonic Thickness Gauge
If you are looking for more details, kindly visit Vertical Tensile Tester.
100
100
100
100
75
50×200
50×200
100×200
50×200
75×150
150×220
100×200
&#;Φ65
50×100
100×400
100×200
60×300
100×150
Geotextile
19
20
21
22
GB/T
GB/T
GB/T
GB/T
Wide strip tensile test of geotextile and related products
Geosynthetics-Determination of tearing strength by trapezoidal method
Geosynthetics static burst test (CBR method)
Geosynthetics-Method for tensile test of wide strips of joints
20
50
50
20
100
25
&#;
100+
200×200
75×200
&#;Φ150
200×150
Zipper
23
QB/T
Metal zippers Comprehensive strength test items for zippers
300
&#;
&#;
US Standard
Fabrics
24
26
27
28
29
30
ASTM D
ASTM D
ASTM D
ASTM D
ASTM D
ASTM D
Test method for breaking strength and elongation of textile fabrics (strip method)
Test method for breaking strength and elongation of textile fabrics (grab sample method)
Standard Test Method for Tearing Strength of Fabrics Tongue Method
Standard Test Method for Tearing Strength of Fabrics Trapezoid Method
Standard Test Method for Cracking at Seams of Woven Garment Fabrics
Stretching and elongation testing of stretch fabrics
300
300
50/300
300
305
500
75
75
75
25
75
250
25×150
100×150
75×200
75×150
100×350
100×350
Britain Standard
Fabrics
31
32
BS EN ISO .1
BS EN ISO .2
Determination of breaking strength and breaking elongation by strip method
Test breaking strength and breaking elongation with sample grab method
100
50
200
100
50×200
100×200
How do you perform a tensile test?
Test procedure:
1. Cut or inject the test material into a specified shape with a determined length and cross-sectional area.
1. Load the sample between two clamps called "fixtures" to clamp the material.
2. Separate the tensile fixture at a constant speed to start the test. By applying weight to the material clamped at one end, the other end is fixed.
3. End the test after the sample is broken (rupture)
What does a tensile test tell you?
Tensile testing is a destructive test process that provides information about the tensile strength, yield strength, and ductility of the metallic material. It measures the force required to break a composite or plastic specimen and the extent to which the specimen stretches or elongates to that breaking point.
Why do we use tensile test?
It is used to find out how strong a material is and also how much it can be stretched before it breaks. This means that tensile testing helps guarantee the safety of a material.
How do I choose a universal testing machine?
When consulting your testing application, there are four main areas that we focus on:
a) Sample Material
b) Test Type
c) Testing Standard
d) Capacity
1. ASTM and ISO requirements: One of the first factors to consider when purchasing UTM is to determine the standards required for testing materials. When selecting test equipment, test standards usually play an important role, because most standards include recommended or required equipment and fixtures. The standard also specifies the details of the test, such as preload, speed, and distance between fixtures. These requirements vary, and it is important to understand what type of testing a material must go through.
2. Materials to be tested: A universal testing machine can be used to test a very wide range of materials. Material type, weight and size play an important role in determining the testing machine that suits your needs. UTSTESTER machines can test various materials, including fabrics, yarns, fibers, rubber, metals, plastics, etc.
3. Maximum load capacity: The universal testing machine is usually selected according to the maximum load required for testing. There are a range of different machines to choose from, including desktop, electromechanical, hydraulic, etc. The load capacity ultimately determines the size of the machine. At UTSTESTER, we advise customers based on their unique testing requirements.
4.Type of test: One of the main factors to consider before buying a universal testing machine is to understand the type of test you want to perform. UTSTESTER's machines are highly customizable and can perform a series of tests, including tension, compression, torsion, bending, etc. Explore our full range of universal testing machines here.
5. All tests, one machine: It is not enough to just choose a suitable universal testing machine. You must also critically consider its future and the range of materials it can be used for. For example, you may need a tensile testing machine today, but you may want to use it for compression or bending tests in the future. By considering all current and future requirements, in the long run, you will be able to reduce costs by purchasing a truly "universal" testing machine.
Looking for a tensile strength tester? Learn more about our tensile testers here.
Contact us to discuss your requirements of Digital Test Stand. Our experienced sales team can help you identify the options that best suit your needs.
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