A PHYSICAL TEST
Case Study D : Physical Evaluation Of
Seat-belt Anchorages (Vehicle Certification).
The first picture shows the
preparation for physical evaluation of a
window-bar installation configuration by Jackson Enterprises
Ltd. This evaluation was conducted in
an actual vehicle with actual anchorage
points in their required locations. Stipulated
loads were applied through hydraulics and suitable connections to
the anchorage points and the resulting deformations evaluated and
documented along with the associated loads that were sustained
by the tested items. These results are ultimately used for vehicle
certification on related items installed into vehicles used in New
This evaluation was conducted
successfully for the customer, considering the vehicle certification
requirements appicable. The result was an optimum product and
eliminating “over-design” which can often be the result of
hand-calculations or even F.E.A. (Finite Element
Refer to our “LINKS” page for a link
to the web-site of Jackson Enterprises Ltd, proudly supported by
THOMAS engineers Ltd.
Testing and engineering evaluation
general provides a valuable tool in consideration of
the performance of the vehicle structure in addition to the product
itself. This is important since, while the product may be adequately
designed, if the anchorage points and surrounding structure are not
capable of sustaining the imposed loads then failure will effectively
The second picture shows the result
of a purposely conducted physical evaluation with
inadequate anchorage point consideration.
RESULT OF INADEQUATE
ANCHORAGE POINT CONSIDERATION
This result and all
results gained from physical evaluation (or
standards testing where conducted) provides a valuable empirical
data source which can be used to enhance manual calculation
techniques, further refining and streamlining the design process.
If you have any special requirements for
stressed seat or seat-belt anchorage frame design please contact
THOMAS engineers Ltd to discuss. Applications include:
Physical Testing in General
Thomas Engineers Ltd has had experience
in developing a wide range of test equipment, to recognised international standards of
performance, for the automotive and pharmaceutical industries,
developing equipment such as the following:
Salt-spay corrosion testing facility.
Stone-chip testing equipment.
Capsule dissolution testing equipment.
We at Thomas
Engineers Ltd have a unique ability to formulate
test procedures also for equipment or products not yet covered
by any existing standard, contact us to discuss your product development and
testing or physical evaluation