Increasing flexibility demands for testing equipment
Tyres are required to be tested and approved to grant a safe and environmental friendly roadability. There is a range of tests and measurement procedures to certify the material quality of a tyre, its characteristics and properties. A multitude of international standards and regulations has to be covered by the tyre manufacturers and testing laboratories. This leads to the demands of highly flexible measurement systems to cover the resulting tests with a minimum of equipment.
inmess as a solution provider for measurement and testing technology and delivers different types of machines which are used in laboratories as well as in production lines. Laboratory equipment is used for qualification and certification of tyres and also for sample inspection in production. These machines are used by tyre manufacturers as well as by independent testing laboratories globally.
One of these qualification tests is endurance testing which, as a standardized procedure according to ISO 10191 / DIN 78051, is an important test to ensure reliability and safety of the tested tyre. The machines have to cover speeds up to 350 km/h and radial forces in the range of 50kN in order to be suitable also for high performance tyres. Besides testing of passenger car tyres the demand to test TBR tyres is increasing which leads to required forces up to 100kN. inmess serves these growing demands by offering different options of endurance testing machines. The machines are equipped with one or two testing stations with a choice of PCR and TBR configuration at each station. Due to existing customer specific guidelines and requirements concerning the machine equipment, inmess offers a large variety of options such as different types of drives, plc controls and interfaces.
The flexibility to fulfil varying demands of customers is also a crucial factor in the field of rolling resistance measurements. The determination of the rolling resistance coefficient for assessment of the fuel efficiency of a tyre is mandatory for EU tyre labelling. Besides the required methods described in the standards like the force and torque methods which have to be covered by a suitable measuring machine, a multitude of additional demands are requested by the customers. This can be technical constraints such as the control system or the drives but can also be expanded to machine parameters such as maximum speed or integration of slip or camber angles. Again, inmess offers solutions for standard rolling resistance measuring machines with a multitude of options. If the customer has demands which are not covered by our portfolio, inmess is open to start a targeted development in cooperation with the customer.
In the field of uniformity testing in the production line the required procedures are well established but differ for each tyre manufacturer. Besides the mandatory standard test for radial and lateral force variation and the determination of conicity and ply steer optional tests are often requested such as runout measurements. Due to the increasing capacity of modern laser sensors and computer performance additional tests of the tread and sidewall become feasible and will be integrated in the future.
The increasing demands for tyre manufacturers to fulfil international standards as well as company specific regulations lead to a growing need for flexible and efficient testing equipment.