Electronic universal testing machine selection - Database & Sql Blog Articles

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Selection of electronic universal testing machine

Model selection

:

First determine the maximum force value you need to test

,

The maximum force is at

2KN

the following

,

Generally use single column electronic tensile testing machine

.

more than the

2KN

To

50KN

Universal double-column desktop electronic universal material testing machine

,

in

50KN

The above is the use of floor-standing electronic universal material testing machine

.

Racks should be combined with ergonomics in design

,

To ensure safety, reduce operator fatigue and provide the highest level of flexibility

.

Body speed and height selection

:

Understand the test space required for the test

.

Beam displacement and vertical test space required for the test

,

Beam displacement

898mm

And vertical test space

1067mm

Generally enough

.

If it is an elastomer test

,

Beam displacement and vertical test space will require a little higher

.

So there should be an extra wide rack or an ultra-high rack to suit the needs of different customers.

.

Load sensor selection

:

Whether the load measurement accuracy meets or exceeds

ASTM4

,

ISO7500/1

Standard

.

Load sensors should also be considered

:

Range, accuracy, repeatability, offset loading error, nonlinearity, stable compensation range, temperature zero drift and sensitivity

.

Automatic identification, calibration and zeroing of load cells greatly speed up the test process

,

And ensure data consistency and accuracy

.

Also, consider the availability of self-identification before starting the test to prevent human error. Full range adjuster eliminates operator manual adjustment range

.

Strain measurement selection

:

Any mechanical system will deform after being stressed, no matter how slight. The same applies to the material testing system. Your system's racks, load cells, and fixtures are not infinitely rigid and will deform slightly when force is applied to the specimen. This deformation is called compliance and can cause serious errors in the test results, especially in high load tests with small stroke requirements.

.

So all racks must be designed to include very strong beam guides.

,

Provides the highest level of beam stiffness

,

High stiffness load cell and fixture

,

With the highest guarantee test result accuracy

.

An extensometer can be used to completely avoid system compliance errors when extremely accurate measurements of specimen deformation are required.

There are two main types of extensometers:

Contact Extensometer: Available

Clip-on

Long stroke, high temperature, etc.

Non-contact extensometer: video optical extensometer

Advantages of video optical extensometers:

No external force is applied to the sample to affect the test results.

It will not break ahead due to sample damage caused by the edge of the extensometer.

The measurement error caused by the sliding of the extensometer blade on the specimen is eliminated.

Extensometer damage caused by breakage of high energy specimens is avoided.

Easy to operate and use.

Deformation measurement of fiber optic cables, metal foils, fiber strands, plastic films, composite laminates, etc., which are difficult to measure in conventional extensometers.

Video optical extensometer with optional high resolution, high accuracy and fast image acquisition speed

,

Can greatly improve the work efficiency

.

Fixture selection

:

A successful clamping solution requires that the specimen does not slip, does not cause the jaw to break, and ensures the axial alignment of the applied force. In some cases, the clamping requirements are very special and require specially designed fixtures or tooling to meet specific test standards. So a variety of fixtures to choose from and a wide range of application experience

,

Very important

.

Software features and performance options

:

Easy to install

Intuitive operation interface

Convenient copy and paste function

Powerful calculation

:

Extensive built-in database

,

The database has a match

ASTM

,

ISO

,

BS

,

EN

,

DIN

Standard calculation options

,

Including maximum load

Breaking load

yield

Modulus preset point average load has many other material testing functions

.

Prompted tests increase speed and increase efficiency

Analysis, results, and reports

Graphics: Appropriate graphics and tables with user-definable graphics, labels, and auto-scaling.

Analysis: Required calculations (ie: crack stress, specified non-proportional yielding) and editing and creating user-defined calculations.

Report generation: can generate reports in multiple formats, such as

PDF

,

MS Word

,

HTML

Wait.

Data export: Compatible with third-party application software, for example

MS Word

,

Excel

Wait. Reporting options make it easy for users to share detailed test results

Safe, reliable, help

Security: User management and password protection are available.

Upgrade: The modular design structure makes it easy to use more features.

Online help: Use instructions, test tips and terminology, etc.

Reliable: User-defined limits and end test conditions