rail vehicle - PJM EN

Even more team power: PJM continues its organic growth

In January we welcomed 3 new colleagues and last year we increased our team power with 10 new employees. PJM has thus continued its organic growth. ‘We have expanded in all areas. Our headquarters and technical facilities have been expanded and our teams have been strengthened in all specialized disciplines, namely in measurement and testing technology, digital rail freight transport, PJ Motion and RCC,’ summarise Martin Joch and Günter Petschnig. There are still many ideas and concrete plans for the future. However, the focus will continue to be on growing steadily, but in manageable steps.

New test area: PJM accredited for pantograph

PJM has expanded its scope as an accredited test center in accordance with ISO/IEC 17025 and now also tests the dynamic interaction between pantograph and overhead contact line. In addition to measurements in accordance with EN 50317, the accreditation also includes simulations in accordance with EN 50318, making PJM the only company in Austria with accreditation for the specialist area of pantographs.

Over the past two years, the Austrian system specialist has invested in the infrastructure of the new department. The pantograph test rig for calibrating the measuring system - as well as the technical equipment for other areas - has been set up at the company's site in Graz. Extensive tests in the wind tunnel have proven that the measuring system is non-reactive. With the existing measuring equipment, tests can be carried out with up to two measuring pantographs, which means that multiple-unit operations can also be realised. The requirements for the interaction between pantographs and the overhead contact line system of the new service jet for ÖBB had been tested in summer (as announced in the media release: https://pjm.co.at/wp-content/uploads/2024/06/PI-PJM-Servicejet-6-2024-DE-Web2.pdf). In the coming weeks, the measurement technology team will be testing another rail vehicle in single and multiple-unit operations.

‘Due to decarbonisation, the focus will be on electric rail vehicles in the future. With its corresponding expertise and infrastructure, PJM is ideally positioned for the new specialist area,’ says Martin Joch, CEO of PJ Messtechnik GmbH. With the new specialist area, PJM offers several advantages for clients, such as the efficient sequence of the various tests for rail vehicles. The expertise in the area of simulations offers particular added value: ‘Simulations significantly minimise the testing effort for multiple tractions. Theoretical calculations allow the large number of variants to be reduced to relevant train combinations, which are then tested in dynamic track tests. This saves valuable time and reduces costs,’ says Martin Joch.

Get more details in the media release

General / News - 11/08/2024

1-year anniversary of PJ Motion

The youngest company in the PJM Group can look back positively on its first financial year. Due to the very good order situation, three more colleagues have joined the company. Approval issues with functional safety and retrofitting of rail vehicles are particularly in demand.

The founding team of Thomas Hofer, Markus Fankhauser, Lorenz Kochan and Joachim Wagner summarize the first review of the past 12 months in an interview: Short clip

Press release

General / Presseberichte / Waggon Tracker - 10/11/2024

Analyst Certification of the American AAR WABL Committee for PJM strength calculations

PJM now also offers wheelset expertise for the leading rail freight country, the USA. The AAR WABL Committee (Association of American Railroads) has voted to approve PJM for performing strength calculations of wheels according to the S-660 and S-669 standards. This new area of expertise is also already in use on a project. "We are very pleased that we can now also offer our customers this consultancy service for the use of rail vehicles in North America," explains Martin Joch.

In the field of wheelsets, PJM has built up profound know-how over the years. Here, too, the link between calculation and testing plays a major role. The expertise includes calculations as well as the design of instrumented wheelsets.

Get the full media release

General - 09/01/2023

Testing the fatigue strength of a container freight wagon at MFL

The fatigue strength tests are used to check that the rail vehicle can withstand the operational loads. There are different test methods for determining the operational strength, such as static tests or impact tests. An important part of this is the pressure frame test, in which the vehicle frame is subjected to loads in an empty and loaded state. The mobile compression frame has proved particularly effective in this respect. With PJM's own development, it is possible to carry out the tests directly at the manufacturer's premises and to use the infrastructure on site or in the vicinity. This was recently the case at Maschinenfabrik Liezen, which offers a perfect infrastructure. For an Italian wagon manufacturer, fatigue tests according to EN 12663 were carried out with the mobile pressure frame.

Short video on the tests: https://youtu.be/qoLnUP4iJEk