Online demonstrations and training available from Mecmesin technical sales engineers

May 2020:
Online test equipment and training demos

 

As more people are working from home to reduce non-essential travel, our technical sales engineers can provide online equipment demos or training sessions via web-based video calls.

If possible, send in your own samples and our sales team will be able to present your own products being tested.

Get in touch to discuss your requirements and to arrange an online demo or training session.

Press stud popper pull-off test

Solution

  • Motorised tensile test stand and gauge
  • Clamping fixture and claw accessory

Benefits

  • Approved product quality testing to customer specification
  • Simple and reliable test procedure
  • Test To Failure (TTF) condition detected and captured automatically
  • Confidence in meeting safety standards

Requirement

The customer was a supplier to major clothing retailer Marks & Spencer, who stipulate that all fasteners and attachments must be tested to failure.

The strength of the press-stud joint was critical to ensure that it met design tolerance and safety levels, particularly in baby clothing. 

A motorized unit with a test speed was defined as 200 mm/min as the system needed to be simple to use in a production environment and provide consistent results.

Solution

The female part of the press-stud or 'popper' was placed under the retaining ring of the lower half of the Pull-Off fixture. The retaining ring was then locked in place by turning the lever of a cam mechanism.

The upper half of the fixture had an adjustable collet to fit over the male part of the press-stud. The collet was then tightened over the male part of the press-stud. The collet was then tightened to secure it in place. For ease of loading the male-press stud and to ensure a straight pull, the upper half of the fixture was connected to the force gauge via a flexible chain link.

The peak tension load to separate the press stud (or break the material joint) was captured on the force gauge display at the fast data-acquisition speed of 1200 Hz.

Test equipment

  • 1000 N UltraTest Motorized Test Stand
  • 500 N AFG
  • Press-Stud Pull-Off Fixture
 

Speak to an expert

Got a question about a product? Request a call back from one of our Technical Sales Engineers now.