News around the world: PJM in the international railway press

Fancy a read? We have quite a choice of articles! In recent weeks, PJM has been the subject of reports on a wide variety of topics. We have put together a small selection.

Rail freight: Automated brake test on Swiss freight trains

Railvolution: SBB Cargo receives type approval für automatic brake test

Railway Pro: Nevomo engage PJ Motion

Railfreight China: Nevomo and PJ Motion

Railway International: PJM expands its services with PJ Motion

 

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1 year in 1 minute: The PJM review 2023

Our teams worked on 90 projects, we grew and fully automated a process for the first time in the history of rail transport. A short video portrait of our numerous activities this year.

Video: Aerodynamic tests for new nightjet generation of ÖBB

The first journey of the new generation of ÖBB Nightjets is coming soon: from 10 December, the new Generation Viaggio Next Level night coaches will be in service in Austria and Germany. Rail passengers look forward to a wide range of comfort categories and technical innovations.

PJM was commissioned with the overall approval in cooperation with ÖBB. As an accredited test laboratory according to ISO/IEC 17025, the Austrian system specialist was in charge of the design and production of the measuring wheelsets as well as for the approval tests in the areas of running behavior, fatigue strength, acoustics and aerodynamics.

The aerodynamic vehicle tests were performed at speeds of over 200 km/h. In the course of these measurements, compliance with the permissible aerodynamic stresses was checked on the train platform, on the open track and in tunnels. The required boundary conditions in Austria can currently only be realised on the Westbahn line, which is why the test runs took place between Vienna and Linz.

Eco-friendly travelling comfort "Made in Austria"

Austria's railway expertise is reflected in the modern night trains. With the new Nightjets, ÖBB is expanding its role as market leader in the European night train business: Siemens Mobility was responsible for the development, the carriages were manufactured in Vienna and the bogies and wheelsets come from Graz. PJM carried out the approval tests and the measuring wheelsets were designed and manufactured in the headquarters of Graz.

Video of high speed test runs

PJM media release

Media release of ÖBB (in German language)

 

 

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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

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Approval tests in Ireland for Geismar Italia S.p.A

Two types of track inspection vehicles will be in operation on the Irish rail network in the future. For the approval tests, the world-renowned manufacturer of track construction machines relied on PJM's expertise. The approval tests took place in Ireland - typical Irish weather included.

Get the full press release:

https://pjm.co.at/en/wp-content/uploads/sites/2/2023/07/PI-PJM-Geismar-EN-07-2023.pdf

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Lecture at International Railway Vehicle Conference in Dresden

A fixture among railway experts is the 1.5-yearly International Rail Vehicle Conference in Dresden (Internationale Schienenfahrzeug-Tagung). This year, PJM and voestalpine Track Solutions Germany GmbH also provided first-hand know-how. In the conference section wheel / rail, an insight into "rail maintenance based on smart measurements" was presented. The innovative approach of using mobile measuring technology to measure the rails and tracks of entire trams and underground trains in a short time was awarded the state prize.

The Rail Vehicle Conference was organised by the Faculty of Mechanical Engineering at the Dresden University of Applied Sciences, the Faculty of Transport Sciences "Friedrich List" at the Dresden University of Technology and DVV Media Group GmbH | Eurailpress Hamburg. Around 500 participants discussed innovations in the railway industry in a beautiful setting on the Elbe.

This year's programme (in German language): https://www.eurailpress.de/fileadmin/user_upload/Tagungsprogramm2023_v2.pdf

 

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Dynamic tests, instrumented wheel-sets and simulation for Rhaetian Rail

Projects always take our measurement technology team to particularly beautiful places. This was also the case recently in Switzerland. The Rhaetian Railway makes railway hearts beat faster. The track is one of the most beautiful in the world, and the Bernina and Albula lines are even UNESCO World Heritage Sites. In addition to the picturesque landscape, the technical requirements are fascinating. Typical for the metre gauge track are curves up to 45 m radius and gradients up to 70 ‰. The Allegra multiple-unit train made by Stadler AG, which is used on this line in various vehicle configurations, is perfectly tailored to these high line requirements. In order to test the running characteristics of different train compositions under special operating conditions, PJM was commissioned with running tests.

The project was carried out in several parts by the experienced system specialist from Austria:

  • In the preliminary stage, the wheel-rail forces as well as occurring buffer forces were determined by simulations. In this way, critical conditions or constellations could be resolved computationally. Another advantage is that this keeps the metrological effort to a minimum.
  • Instrumented wheel sets, accelerators, transducers as well as measuring buffers were prepared in the usual way at the company's location in Graz and then installed on the test vehicle at the RhB main workshop in Landquart.
  • The measurement campaign was carried out on the track between Poschiavo and Alp Grüm. In real operation, the running behaviour was tested under increased operating forces. The test runs took place in November 2022. The data analysis and report were recently completed.

Further information in the media release: https://pjm.co.at/en/wp-content/uploads/sites/2/2023/02/PI-PJM-Rhaetian-Rail-Web-02-2023-EN.pdf

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A good start into a "projekt-rich" year

We have started into a project-rich year. Our laboratory team is currently working on new instrumented wheel sets. The engineering experts validate existing vehicles and optimise new vehicle designs using simulation and FE calculation. The test centre team is constantly on the road for vehicle tests. Our production team is constantly engaged in the production of our digital WaggonTracker technology. The projects of railway companies and vehicle manufacturers are carried out in Austria, Germany, the Czech Republic, Italy, Switzerland and Ireland, among others.

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Mobile calibration test rig for instrumented wheelsets

Precision is the top priority in metrology, and calibration is a crucial factor. To ensure measurement reliability even for projects on site, PJM has developed a mobile calibration test stand. The advantages:

  • After reprofiling the measuring wheel sets, recalibration can be performed on site.
  • The new type of test stand enables unprecedented performance.
  • The test stand is easy to transport and is therefore ideally suited for worldwide use.

The mobile calibration test stand has already proven its worth during the first "field test" and was used in a project for the Rhaetian Railway. Thus we can react quickly and flexibly to customer requirements even under challenging conditions. 

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Nightjets of ÖBB: Measuring wheel sets and approval tests

In future, a total of 33 Nightjets of the new Viaggio Next Level generation from Siemens Mobility will ensure comfortable and at the same time climate-friendly travel in Central Europe. For the approval of the newly developed passenger coaches, PJM is on board as an accredited test center according to ISO/IEC 17025. The Austrian system specialist was commissioned for the overall approval in cooperation with ÖBB. The contract specifically includes the instrumented wheel sets as well as the approval tests in the areas of running behavior, fatigue strength, acoustics and aerodynamics.

6 instrumented wheel sets were developed and manufactured in Graz and then installed in the test vehicle at the ÖBB plant in Vienna. The test runs started in autumn 2021. The test train is in use throughout the entire Austrian rail network. To evaluate derailment safety, the first approval tests started in the field of running behavior, after which the bogies were upgraded for the test runs in the area fatigue strength. Finally, high-speed measurements follow for the aerodynamics area. The acoustic tests will complete the approval tests. "For an extensive project like this, it is above all our metrology expertise and experience in bringing together all specialist areas that prove their worth. Our flexibility and routine, which we have gained from our numerous international projects, are also essential. Due to the weather, there are always changes in procedures, for example during test runs in winter on the Arlberg at 1,000 m above sea level," explains Martin Joch, CEO of PJM. "A good collaboration with the project partners is also immensely important in large-scale projects. The cooperation with ÖBB's measurement group is excellent."

Get more in the media release:

https://pjm.co.at/en/wp-content/uploads/sites/2/2022/10/10-2022-Presse-Info-Nightjets-PJM-Web2-EN.pdf

 

 

PJM_Nightjet klein @Credit PJM

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