Test loading and analysis

Hämeen ammattikorkeakoulu
Man in a computer that has two screens.

Test loading and analysis

Test loading and analysis

One significant activity of SMC is the research and development work performed on sheet metal members and sheeting for the building industry. These R&D tasks are executed in close cooperation with our clients. In our assignments we utilize our theoretical and testing know-how, as well as our expertise on design methods. We specialize in tasks related to the design of sheet metal members/structures and light-weight sandwich panels. Expertise and testing services are available for choosing structure materials, estimating durability and analyzing structures theoretically (FEM).

With our test loading equipment it is possible to study the behaviour and load-bearing capacity of full-scale structures and structural parts. The hydraulic cylinders of the loading frame can be controlled based on either the loading force or the displacement measurement. Both the controlling and the measurement data recording is computerized.

In addition to the construction industry, several other industries have utilized our loading frame for testing of e.g. furniture, fasteners, parts of transportation equipment and structures of cranes. Furthermore, research services and comprehensive research projects for companies comprise only part of the loading frame utilization.

The frame is also used for teaching purposes in HAMK University of Applied Sciences and in trainings tailored for companies to illustrate structural behaviour and failure mechanisms in practice.

Test loading frame

The test loading frame can be utilized to test the behaviour and load-carrying capacity of both full-size structures as well as separate structural members. This equipment is suited for producing static and repeated loadings.

At the SMC loading frame, two systems are available, with hydraulic cylinders of maximum loading capacities for 150 kN and 250 kN. When test loading a separate piece/member, 1-2 cylinders can be used positioned in different ways in respect to the tested piece/member.

The control system of the cylinders allows programming for test-specific timed loadings, for controlling the speed of the loading, and for controlling the loading so that the tested member reaches the desired displacement and displacement rate at a specified point. When two cylinders are used to load the tested piece/member the cylinders may function dependent on each other, thus enabling a simultaneous loading. Test measurement results are saved automatically on to a computer.

The more recently acquired equipment, capable for dynamic testing and 250 kN maximum loading per cylinder, was supplied to SMC in spring 2009, by the German company Instron Structural Testing Systems (IST). IST is a global supplier whose testing devices are used in e.g. automotive industry, universities and R&D centres.

Tensile testing machines

Sheet Metal Centre has two testing systems for material testing:

  • Wolpert – suitable for tension tests up to 200 kN.
  • Zwick/Roell Z050 – suitable for tension and compression tests up to 5 kN and 50 kN.

These devices can be used for versatile testing purposes: tension and compression resistance of different materials, properties of materials, as well as resistance of various joints (e.g. welded seams and adhesive joints) and standard / application specific coating adhesion.

HÄME UNIVERSITY OF APPLIED SCIENCES