By Ralf Berres and Dr Dieter Barz

The Industry Grip Testing System (IGTS) is a brand new measurement trailer, developed as a joint project between tyre maker Michelin and solution provider Altracon. It comprehends the knowledge of both tyre and measurement equipment experts and represents the technical feasibility in terms of tyre characteristics measurement on the road with state of the art ease of use.

The Altracon Industrial Grip Trailer System IGTS consists of a modular concept design. One development target was to keep the system variable for existing as well as for future test- and measurement tasks and to adapt to any kind of on the road testing requirement.

The IGTS grip testing trailer is built for straight dry and wet-braking tests. The trailer’s frame and wheel load station are optimised by FEM technology for highest stiffness and lowest deformation.

Design features

The trailer is made of a stiff frame with independent wheel suspension for the left and right wheels and is equipped with a variable towing bar to level different heights of the vehicles hitches. It may be pulled from any drawing vehicle with sufficient trailing load and engine torque for the measurements, no matter if it is a Pick-up, SUV, or truck. The IGTS hosts an independent test wheel load station. It is placed in the center of the trailer between the carrying wheels and presses the test wheel to the road surface on a path between the trailer wheels. The test-wheel load station is equipped with a high-performance disk brake to apply the braking torque/ force to the test wheel for grip testing. All functions are independent from the drawing vehicle while it carries all the necessary supplies on board except of the water tank, which is carried by the drawing vehicle.

The concept design is prepared to be extended with dynamic test capability with camber and slip variation, which will be included in the IGTS “Force and Moment” trailer. The test wheel load station and its media supply and control system may also be built into other vehicles such as busses or trucks, which must be prepared accordingly as a matter of course. 

The trailer is equipped with a modular undercarriage set-up. The basic trailer requires only one axle to perform grip measurements, which are done straight rolling/ braking. The directional stability of the trailer is enhanced by two additional lift axles, one in front and one behind the carrying axle of the trailer, to run dynamic tests with the IGTS on the road when it is equipped with camber and slip variation functionality. These lift axles are only used during the actual measurement and will be lifted for taxiing and transportation. Both axles use smaller wheels than the carrying axle and also have independent wheel suspension. The wheels of the lift axles are moreover actively steered to balance side forces which may be generated during testing. The drive performance control system adjusts the trailers’ Eigen modes in vertical and lateral direction and significantly improves the directional stability.

The IGTS test wheel load station is light-weight to reduce the effect of mass of inertia. It is equipped with an active wheel load control while previous test trailers just use dead weights. A fully automatic and adjustable damping control at the testing axle adjusts the Eigen mode and cares for smooth running and best precondition for the measurement on any road. The high-performance long-life wheel spindle is specially designed for lowest rolling resistance.

Power supply is done by batteries, which are loaded by generators. These are inbuilt to the carrying axle at each side. The power supply engineering may be designed as 48V DC as well as 240/400 1- or 3-phase AC with converter for special applications.

Compressed air is supplied from an inbuilt compressor with air tank for inflation pressure adjustment or control as well as for connection of air driven tools.

Hydraulic supply from an inbuilt hydraulic pump system with accumulator tank enables dynamic load, brake, and steering function.  The high-speed characteristics of the hydraulic supply is suitable to simulate braking performance (ABS) and quick release brake pressure at the test wheel. It allows to run up to 8 repeatable tests per 100 m in a sequence in combination with the high-performance brake-control techniques.

The optional water management system is integrated and allows controlled watering of the test-wheels path. The nozzles are placed in front of the test wheel. Their watering width is adjustable to 420mm and their watering height is controlled by flow-measurement, which is adjustable between 0 and 4mm at maximum speed of 100 km/h. The system is operating with continuous water flow for quickest reaction times. It is pressure-controlled and switches between circulating and spraying mode without any time lag and pressure loss.

Measurements

The trailer speed measurement is precisely done directly at both carrying wheels. Different speeds measured at the left and right side indicate deviation from the straight path. The alignment of the drawing vehicle and the trailer is moreover precisely measured with a laser-based alignment measurement system if the IGTS is equipped with camber and slip variation functionality. Inputs from both, the speed and the alignment measurement system, will generate correction of the directional stability by the control system.

The wheel speed of the test-wheel is precisely measured directly at the test-wheel spindle with an encoder, which also gives information about the braking process of the test wheel.

Forces and moments at the test wheel are synchronously measured in x- and z-direction with 1-component sensors. A multi-component force and moment dynamometer, which may use strain gauge or quartz technology, is optionally available as an alternative. It is integrated to the wheel spindle, fully covered and shielded. However, both set-ups are available either independent or together.

All measurements of motion are done with precision sensors, using various technologies, depending on the entire parameter. For referencing, speed and location recording different control and measurements techniques are used as well.

Ergonomics

The test-wheel carrier design enables to turn the wheel by 90° around its vertical axle for wheel exchange and service. This allows the operator to access the wheel fixation from the back of the trailer.

SUMMARY OF DISTINCTIVE FEATURES

-              Light-weight wheel suspension to reduce the mass of inertia

-              Low rolling resistance high-performance long-life wheel spindle

-              Measurement systems as single axle or with dynamometer technics

-              High precise load control designed for equalised axle weight

-              Eigen-mode adjustment by fully automatic and adjustable damping control at the testing axle

-              Brake system with high speed characteristics hydraulic supply to simulate braking performance (ABS) and quick release brake pressure   

-              High performance braking control system

-              Test sequences with up to 8 tests per 100 m in a row.

-              Modular trailer undercarriage for one or three axle systems for characteristics testing including drive performance measurement and control technics to adjust the trailers’ Eigen-mode in vertical and lateral direction

  -            Integration in existing testing environment and customised data solution

  -            Different control and measurement technics for referencing, speed and position recording

  -          Optional water-levelling system to apply an adjustable water film in front of the test-wheel in case of a missing road watering system

Hana Technologies, Inc. (Hana RFID), a global leader in the design and manufacturing of embeddable RFID tyre tags, has become the first RFID company to join the Circular Rubber Platform. This development aligns with Hana RFID’s mission to drive innovation in tyre traceability and reinforces the company’s long-standing commitment to sustainability and circularity in the tyre and rubber industry.

Hana RFID has been at the forefront of RFID-enabled tyre traceability since 2005, facilitating smooth tracking from cradle to grave and promoting circularity. Hana's RFID tyre tags, which are embedded during manufacturing, provide each tyre a distinct digital identity, facilitating complete lifetime tracking from manufacture and use to recycling and reuse. Hana hopes to promote RFID usage in sustainable tyre lifecycle management by working with leading companies in the sector, which will eventually save waste and increase resource efficiency.

Using radio frequency identification (RFID) technology, an RFID tyre tag is a tiny, embedded device that tracks, monitors and controls tyres. In addition to providing smooth connection with inventory monitoring, fleet management systems and other digital applications, such as the European Digital Product Passport (DPP), these tags produce digital twins of tyres. Hana's RFID solutions empower the whole tyre ecosystem to expedite fleet management, improve inventory control, optimize maintenance, and create creative business models that increase sustainability and efficiency.

Val Peters, VP – Marketing, Hana RFID, said, “We are excited to join the Circular Rubber Platform as the first RFID company in this initiative. RFID technology is essential for advancing a circular economy in tyre manufacturing, and we look forward to collaborating with partners across the rubber sector to drive sustainability on a broader scale.”

Enrico Koggel, Co-Founder, Circular Rubber Platform, said, “RFID technology is key to enabling a circular rubber economy. RFID enables seamless tracking from production to end-of-life recycling by connecting material and production data into each rubber product. It provides traceability and easy identification and allows for smart sorting of materials and efficient recycling to ensure responsible reuse, remanufacturing, recycling and waste reduction. We are therefore very happy to announce Hana as a new member of the Circular Rubber Platform, with the technology and experience they can provide to the platform. We look forward to sharing knowledge on RFID and working out opportunities for this technology in rubber industries that require Digital Product Passports in the near future, such as footwear.”

TÜV SÜD has expanded its test laboratory in Frankfurt am Main and unveiled new testing facilities at an Open Lab Day at the site, giving customers and employees an exclusive insight into the new state-of-the-art testing environments. The expansion strengthens TÜV SÜD’s position as a leading provider of independent testing and certification services.

Car charging plugs can now be tested in the lab to assess features like weather resistance, mechanical strength and electrical safety. To guarantee the endurance and durability of charging plugs and other parts, the new lab can also conduct crash testing on them. The inclusion of performance testing for tiny batteries is another significant development. Basic functional analysis will be the main emphasis of these tests at first, but in the second part of the year, comprehensive safety and performance evaluations will be included. Similar to this, power tool testing capabilities have been greatly increased to give manufacturers an even more thorough evaluation of the calibre, robustness and safety of their goods.

The capability to ascertain the biogenic carbon content of materials is an additional highlight of the expansion. These assessments support the implementation of sustainable manufacturing methods by giving businesses evidence of the utilisation of renewable raw resources. In order to make sure that packaging and other materials fulfil the strictest safety regulations and don't leak dangerous compounds into food, the testing infrastructure for materials that come into contact with food has been increased at the same time. It's also important to note the recently added ability to evaluate welding fume filtration systems, which may undergo a thorough performance assessment and will soon be certified.

TÜV SÜD is now able to provide an even greater variety of chemical testing services to make sure that products satisfy the most recent regulatory standards thanks to the expansion of its Frankfurt laboratory. With standardised testing for compounds including PFOS, PFOA, C9-C14 PFCAs, and PFHxS, there is a special emphasis on PFAS analysis. Due to the laboratory's expansion, even more businesses may now make use of its extensive testing knowledge, which includes services related to durability testing, risk assessment and certification for a range of product categories.

Walter Reithmaier, CEO, TÜV SÜD Product Service GmbH, said, “By expanding our laboratory in Frankfurt, we are responding to growing demand for product testing and certification. Our new testing capacities will set new standards in safety, sustainability and performance. We look forward to supporting our customers with state-of-the-art testing technology and professional expertise.”

Chicago-based Koala Technologies (KTL), a leading automotive testing, measurement and evaluation tools provider, has launched Te.Sense Bloom – a breakthrough in non-destructive rapid tyre deflation testing. The company has introduced the base kits starting at USD 20,000.

The solution the company claims is fully compliant with FMVSS 110 and emerging EV stability test standards. The Te.Sense Bloom allows passenger vehicle manufacturers and tyre makers to cost-effectively reuse solutions, thereby optimising test programmes while reducing waste.

Currently, the rapid tyre deflation tests often rely on a vehicle being driven over special roadway cleats at defined speeds. This method sees tyres destructively punctured and destroyed by the cleats, and internal inflation pressure is quickly reduced to atmospheric pressure. At times, these tests aim to ensure that the tyres are safely seated on the wheels post rapid deflation, wile at times it is to evaluate vehicle stability in terms of tyre failure.

The company stated that this tests however require destroying multiple tyres, not only leading to waste but may also corrupt certain vehicle dynamics tests that call for a single, targeted tyre failure.

On the other hand, with Te.Sense Bloom, the industry can use non-destructive controlled, rapid deflation for the selected tyres. Using a controllable central air ejector valve with a volume and a flow capacity that simulates a sudden tyre press loss. While the method sounds simple and frugal, the innovation lies in relation with the turn-key nature of Te.Sense Bloom. Automotive testers and engineers get a repeatable set up method, easy in-car operation and simple connectivity with data acquisition systems. As part of its comprehensive supply to Te.Sense Bloom customers, KTL even offers a wheel setup service to simplify test preparations.

The other advantage of Te.Sense Bloom is that the tyre deflation event can be triggered from inside the vehicle or remotely that further expands test scenario possibilities. It can be used for testing tyre inflation pressures up to 100 PSI and speeds up to 140 kmph (87 mph). The real-time tyre inflation data at 100 Hz has a claimed data accuracy of +/-0.1 PSI.  

Kenneth Martin, Head of Tyre Testing at the Transportation Research Center, said, “We have significant experience with rapid tyre deflation tests, using all types of methods, and we’re looking forward to evaluating KTL’s Te.Sense Bloom, since it represents a turn-key, non-destructive solution. There’s definitely some baseline justification for test equipment like this because it fundamentally means consuming fewer tyres. But Te.Sense Bloom’s inherent connectivity opens some other doors also, since triggered and monitored rapid tyre deflations are becoming an area of interest for vehicle stability testing, especially in EV space.” 

The first U.S.-specification kit has been delivered to the Transportation Research Center in Ohio for initial evaluations.

Being compliant with EV stability testing standards the Te.Sense Bloom is already being used by OEMs globally such as Huawei AITO, SAIC Motor Corp and GAC Motor to conduct regulatory tests such as GB/T 38796-2020 (Performance Requirements and Test Methods of Automobile Blow-out Emergency Safety Device).

Mike Lee, Founder and President, KTL, added, “Koala Technologies is excited to introduce Te.Sense Bloom into new markets, beginning in 2025. Bloom has been widely adopted for vehicle development testing in China over the last several years, becoming a must-have tool for many OEMs and key suppliers. It’s one example, among many, of an excellent, trusted, useful automotive testing device that no one knows about outside China. A part of our mission at KTL is to shine a light on some of these exciting technologies that are currently available, but not widely known. Another part of our mission is to help customers achieve their goals more efficiently and at a lower cost. We look forward to the upcoming testing at the Transportation Research Center in Ohio, and we hope that Te.Sense Bloom proves to be a good fit for automotive development programmes in the U.S and beyond.”

Bridgestone Corporation has developed a new Tyre and Road Wear Particles (TRWP) vehicle collection method aimed at understanding the environmental impact of TRWP. The solution was also displayed at the Tire Technology Expo 2025, held in Hannover, Germany, from 4 to 6 March.

TRWP is made up of a blend of road pavement components and tread (tyre surface). In order to comprehend the particle size distribution, dispersion behaviour, and environmental impact – as well as to create effective collecting techniques – Bridgestone is actively engaged in a number of TRWP research projects. The company is dedicated to comprehending TRWP and lowering its generation through these initiatives.

Utilising the B-Mobility testing facility at the Bridgestone Innovation Park in Kodaira, Tokyo, the company has created a state-of-the-art technique that makes it possible to gather TRWP effectively. Bridgestone has used laser light scattering in conjunction with a high-speed camera to visualise the dispersion of particles like TRWP. Based on this, the company has developed a device that effectively catches TRWP and covers the whole tyre. Additionally, the technique made it possible to collect TRWP effectively in a state that removes the effects of exhaust pollutants and broken dust by employing autonomous driving and an electric car with regenerative braking.

Through the Tire Industry Project (TIP), which is part of the World Business Council for Sustainable Development (WBCSD), Bridgestone has been researching the physical and chemical properties of TRWP and their implications on the environment. In addition to the continuous co-creation and internal R&D cooperation, Bridgestone is speeding up its efforts to evaluate TRWP's environmental consequences by collecting it effectively and with a high recovery rate using its recently developed collection technology.