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26./27. April 2012

16. Wiesbadener Kunststoffrohrtage 2012
(16th Wiesbaden Plastic Pipe Days 2012)

TestPEP European funded project:
Development and Validation of an Automated Non-destructive Evaluation (NDE) Approach for testing Welded Joints in Plastics Pipes.
The TestPEP project has received funding from the European Community´s Seventh Framework Programme managed by REA-Research Executive Agency (FP7-SME-2008-2) under grant Agreement no. 243791.

Presentation Dipl.-Ing. J. Grieser
"Development of the flaw acceptance criteria"

7./8. March 2012

3rd International Conference, Munich: Plastic Materials in Plant Engineering
TÜV SÜD Industrie Service GmbH, TÜV SÜD Akademie GmbH

Presentation Dr. Hessel
"Extended application potential in tank and apparatus engineering by using PE 100-RC"

Conference Programme (PDF, 268 KB)  (PDF, 49 KB)

27./29. September 2011

Long term creep rupture, click to enlarge

International Conference on Plastic Pipe Fittings and Plastic Pipe Joining Technology,
Hotel Nikko, Düsseldorf, Germany

Presentation Dr. Hessel
"Long term creep rupture testing of butt welded heavy wall pipes"
("Die Prüfung des Langzeitverhaltens von stumpfgeschweißten Großrohren")
Conference programme (PDF, 130 KB)  (PDF, 49 KB)

07./08. April 2011

Großrohrschweißanlage, click to enlarge

15. Wiesbadener Kunststoffrohrtage 2011
(15th Wiesbaden Plastic Pipe Days 2011)

Presentation Dr. Hessel
"Langzeitverhalten von Schweißverbindungen an Großrohren aus Polyethylen"
("Long term creep rupture behaviour of welded joints of large diameter pipes made from Polyethylen")

Summary (PDF, 29 KB)  (PDF, 29 KB)

22./23. February 2011

Long term behaviour of various PE's, click to enlarge

Sewerage And Drainage Pipes, Düsseldorf, Germany

Presentation Dipl.-Ing. S. Nonhoff
"Long term behaviour of various PE´s"
("Langzeitverhalten verschiedener Polyethylene")

Conference Programme (PDF, 97 KB)  (PDF, 49 KB)

02. November 2010

Crack caused by notch effect, click to zoom

Second DVS/WJS Conference on Joining Plastics, Chamber of Crafts Düsseldorf, Düsseldorf, Germanny

Presentation Dr. Hessel
"Time saving test procedures to evaluate the long time creep rupture behaviour of welded Polyolefines"

28./29. April 2010

Time ti Failure of PE 100 pipes with different AO level, click to zoom

14. Wiesbadener Kunststoffrohrtage 2010
(14th Wiesbaden Plastic Pipe Days 2010)

Presentation Dr. Hessel
"Mechanical and thermal limitation of use of PE100-RC
- New creep rupture curves
- Higher service temperatures by increased resistance to thermal ageing
"
("Mechanische und thermische Einsatzgrenzen von PE 100-RC
- Neue Zeitstandkurven
- Höhere Temperaturbelastbarkeit durch verbesserte Wärmealterung")

10./11. March 2010

2nd International Conference, Munich: Plastic Materials in Plant Engineering
TÜV SÜD Akademie GmbH, TÜV SÜD Industrie Service GmbH

Presentation Dr. Hessel on 11. März 2010, 13:30, focal point "Operating experience"
"Calculation of the remaining service life of PE-pipes after long term operation"

Conference Programme (PDF, 223 KB)  (PDF, 49 KB)

07./08. October 2009

Use of continuous pipe with deformed cross sections, click to zoom

Sewerage And Drainage Pipe 2009, Cologne, Germany

Presentation J. Grieser
"PE pipes for the relining of waste water pipelines - Material requirements at the presence of stress cracking ingredients"
Presentation charts (PDF, 675 KB)  (PDF, 49 KB)

05./07. October 2009

New creep rupture curves for PE 100-RC in PAS 1075, click to zoom

Plastics Pressure Pipes Conference 2009, Cologne, Germany

Presentation S. Nonhoff (Speaker), Dr. J. Hessel
"PE pressure pipes made from PE 100-RC
- Design and calculation of gas or water pipelines for a minimum service life of 100 years"

Summary, Presentation charts (PDF, 1196 KB)  (PDF, 49 KB)

28. May 2009

Torre Agbar - The Conference Building, click to zoom

Jornada Técnica: Tuberias de Polietileno (PE), Barcelona, Espana, 28 de Mayo 2009

Vortrag Dr. Hessel
"Ensayos de soldaduros"
("Prüfungen der Schweißverbindungen")
Presentation charts (PDF, 2662 KB)  (PDF, 2662 KB)

29./30. April 2009

Service life of pipes made from PE 100-RC, click to zoom

13. Wiesbadener Kunststoffrohrtage 2009
(13th Wiesbaden Plastic Pipe Days 2009)

Presentation Dr. Hessel and booth showing samples
"Aktueller Stand und Perspektiven:
Druckrohre aus PE für alternative Verlegetechniken nach PAS 1075
- Eigenschaften, Anforderungen und Prüfverfahren -
"
("Actual state of th art and perspectives:
Pressure pipes made from PE for alternative installation techniques according to PAS 1075
- Properties, specifications and test methods")
Presentation text (PDF, 32 KB)  (PDF, 32 KB)

26./27. November 2008

Creep rupture behaviour of Polyolefin pipes, click to zoom

6. Würzburger Kunststoffrohr-Tagung 2008, SKZ Würzburg
(6th Würzburg Plastic Pipe Conference 2008, SKZ Würzburg)

Presentation Dr. Hessel
"Rohre aus Polyethylen - Stand und Perspektiven"
("Pipes made from Polyethylene - state of the art and perspectives")
Presentation text (PDF, 520 KB)  (PDF, 520 KB)

19./20. November 2008

The Welding Institute, Cambridge, click to zoom

First WJS/DVS Conference on Joining Plastics, TWI, Cambridge, UK

Presentation Dr. Hessel
"Destructive testing of PP and PE pipe joints"
Presentation charts (PDF, 4199 KB)  (PDF, 4199 KB)

29.October 2008

Red ring: Fracture of the test specimen, click to zoom

Plastic Pipeline Day: Latest findings in plant engineering
(Kunststoff-Rohrleitungsbau: Aktuelle Erkenntnisse im Anlagenbau)
ThyssenKrupp Schulte, Neuss, Germany

Presentation Dr. Hessel
"Überwachung von Chemikalien-Lagerbehältern durch voreilende Betriebsproben"
("Monitoring of chemical tanks by using a failure predicting test specimen")
Presentation charts (PDF, 1305 KB)  (PDF, 1,305 KB)
Movie of the presentation  

22./24. September 2008

PE spiral wound pipe DN 2300, click to zoom

Plastics Pipes Conference XIV, Budapest, Hungary

Presentation Dr. Hessel
"Resistance to internal pressure of large diameter PE-pipes - A new approach using a cost-cutting test method"
Presentation text (PDF, 976 KB)  (PDF, 976 KB)

22./24. September 2008

Point loading test, click to zoom

Plastics Pipes Conference XIV, Budapest, Hungary

Presentation Dr. Hessel
"Buried PA 12 pipes for the transport of gas & water; No sand embedding necessary?"
Presentation text (PDF, 124 KB)  (PDF, 124 KB)

22./24. September 2008

Hydrstatic pressure behaviour of PE Pipes, click to zoom

Plastics Pipes Conference XIV, Budapest, Ungarn

Presentation
H. Vogt, H.-F. Enderle, U. Schulte - Basell Polyolefine GmbH
J. Hessel - Hessel Ingenieurtechnik GmbH
"Thermal ageing of PE 100 pipes for accelerated lifetime prediction under service conditions"
Presentation text (PDF, 576 KB)  (PDF, 576 KB)

10./11. September 2008

Trenchless installation using a plough, click to zoom

Drittes Deutsches Symposium für die grabenlose Leitungserneuerung, Universität Siegen
(Third German symposium for trenchless renewal of pipelines, University Siegen)

Presentation Dr. Hessel
"Rohre aus Polyethylen für alternative Verlegemethoden - die neue PAS 1075"
(Festlegung der Eigenschaften, Anforderungen und Prüfverfahren von PE-Rohren für alternative Verlegetechniken)
("Pipes made from Polyethylene for alternative installation techniques - New PAS 1075")
(Determination of the properties, specifications and test methods of PE pipes for alternative installation techniques)
See item   (PDF, 32 KB)

17./19. June 2008

Correlation between FNCT and point loading test, click to zoom

ENGINEERING 2008 - The 6th International Conference, Exhibition and Technology Shows, Tomaszowice/Krakow, Poland

Presentation Dr. Hessel
"Qualitätssicherung für grabenlos verlegbare Rohre aus Polyethylen"
(Notwendige Maßnahmen zur Sicherstellung einer gleichbleibend hohen Qualität vom Rohstoff bis zur grabenlosen Verlegung der Rohre)
("Quality assurance for trenchless installation PE-pipes")
(Essential procedures for a safeguarding high quality from the raw material up to the trenchless installation of the pipes")
Charts 0f the presentation (PDF, 2301 KB)  (PDF, 2301 KB)

23./24. April 2008

Resistance to stress cracks on Polyethylene 100-RC in comparison, click to zoom

Wiesbadener Kunststoffrohrtage 2008
(Wiesbaden Plastic Pipe Days 2008)

Presentation Dr. Hessel and booth showing samples
"PE 100-RC, ein PE 100 mit erweitertem Anwendungspotential"
("PE 100-RC, a PE 100 with extended application fields")
(Text look "Publications" - JOINING PLASTICS 1/2008")

23./24. April 2008

Testing a weld, click to zoom

Wiesbadener Kunststoffrohrtage 2008
(Wiesbaden Plastic Pipe Days 2008)

Presentation Dr. Boris Gibbesch and Johannes Grieser
"Einsatz von PP-Großrohren mit großen Wanddicken in der Rauchgasreingung"
("Flue gas cleaning using heavy wall pipes made from Polypropylene")
(Text look "Publications" - 3R international 3-4/2008)

12./13. September 2007

Trenchless renewal of pipelines, click to zoom

Zweites Deutsches Symposium für die grabenlose Leitungserneuerung, Universiät Siegen
(Second German symposium for trenchless renewal of pipelines, University Siegen)

Presentation Dr. Hessel
"Qualitätssicherung für grabenlos verlegbare Rohre aus Polyethylen"
("Quality assurance for trenchless installation PE-pipes")
(Text look "Publications")
Symposium Programme (PDF, 522 KB)  (PDF, 522 KB)

23./24. May 2007


Representation of the test concept on the Arrhenius diagram, click to zoom

Jahresversammlung der DVS Arbeitsgruppe W 4 "Fügen von Kunststoffen", SKZ Würzburg
(Annual general meeting of DVS Working Group W 4 "Joining of Plastics", SKZ Würzburg)

Presentation Dr. Hessel (on behalf of J. Grieser)
"Überprüfung des geforderten Zeitstandzug-Schweißfaktors und der Mindestlebensdauer von Schweißverbindungen aus Polyethylen"
Grundlage für eine DVS-Richtlinie, erarbeitet von der DVS AG W 4.04
("Checking of the required long-term tensile welding factor and the minimum creep rupture time of welded joints made of Polyethylene", Basis of a DVS-Directive, compiled by DVS AG W 4.04)
(Text look "Publications")

23./24. may 2007

Welding of large PE pipes on the site, click to zoom

Jahresversammlung der DVS Arbeitsgruppe W 4 "Fügen von Kunststoffen", SKZ Würzburg
(Annual general meeting of DVS Working Group W 4 "Joining of Plastics", SKZ Würzburg)

Presentation J. Grieser
"PE 100+ Association: Projekt Großrohrschweißen"
("PE 100+ Association: Buttfusion Harmonisation Project")
Presentation charts (PDF, 1911 KB)  (PDF, 190 KB)

25./26. April 2007

The legendary beetle, click to zoom

Wiesbadener Kunststoffrohrtage 2007
(Congress and Exhibition on Plastics Pipes, Wiesbaden, 2007)

Presentation Dr. Hessel and booth showing samples
"100 Jahre Nutzungsdauer von Druckrohren aus Polyethylen - Aussage wissenschaftlich bestätigt"
("100 years service life of pressure pipes made from polyethylene - Confirmed by scientific methods")
Congress programme (PDF, 190 KB)  (PDF, 190 KB)

10./11. October.2006

Correlation point loaded pipe-FNCT, click to zoom

Erstes Deutsches Symposium für die grabenlose Leitungserneuerung, Universität Siegen
(First German symposium for trenchless renewal of pipelines, University Siegen)

Presentation Dr. Hessel
"Rohre aus Polyethylen für die grabenlose Druckrohrerneuerung"
("Polyethylen pipes for the trenchless installation of pressure pipelines")

02./05. October 2006

Sampling at an electrofusion joint, click to zoom

Plastics Pipes Conference XIII, Washington DC, USA

Presentation Mike Troughton (Co-Authors: Joachim Hessel, Chris Brown, Marco Piovano)
"Comparison of long-term and short-term tests for electrofusion joints in PE pipes"
Presentation text (PDF, 525 KB)  (PDF, 525 KB)

03./04. May 2006

Pipe extruders - 50 years ago, click to zoom

Wiesbadener Kunststoffrohrtage 2006
(Congress and Exhibition on Polyolefine Pipes, Wiesbaden, 2006)

Presentation Dr. Hessel and booth showing samples
"Von der Idee zum Erfolg: 50 Jahre Rohrsysteme aus Polyethylen - eine Betrachtung aus ingenieurtechnischer Sicht"
("50 years of polyethylen piping - Engineering perspective")
(look "Publications")

03./04. May 2005

Design of PE pipes, click to zoom

Wiesbadener Kunststoffrohrtage 2005
(Congress and Exhibition on Polyolefine Pipes, Wiesbaden, 2005)

Presentation Dr. Hessel and booth showing samples
"PE-Rohrwerkstoffe für Druckrohre - Sicherheit bei komplexer Beanspruchung"
("PE pipe materials - safety under complex load")

28./29. April 2004

Installation of PE-pipes without sand-embedding, click to zoom

Wiesbadener Kunststoffrohrtage 2004
(Congress and Exhibition on Polyolefine Pipes, Wiesbaden, 2004)

Presentation Dr. Hessel and booth showing samples
"Aktueller Stand der Erkenntnisse bei sandbettlos verlegbaren PE-Rohren"
("The latest findings for laying PE-pipes without sand-embedding")
Congress programme (PDF, 109 KB)  (PDF, 109 KB)

19.04.-22.04.2004

welding of large diameter PE-pipes, click to zoom

Plastics Pipes XII Conference, Milan Italy

Presentation Dr. Hessel (Co-Authors: A. Lueghamer, M. Tsunaga)
"Welding of large diameter heavy wall polyolefine pipes and long term performance"
Abstract (PDF, 102 KB)  (PDF, 102 KB)

30.09.-01.10.2003

failure by point load, click to zoom

6. Bregenzer Rohrleitungstage und Fachausstellung des brbv
(6. Congress on Piping and Exhibition, Bregenz, brbv)

Presentation Dr. Hessel and booth showing samples
"Sandbettlose Verlegung von PE-Rohren - Eine Frage der Rohrqualität -"
("Buried polyethylene pipes without sand-embedding - A matter of pipe quality")

23./24. April 2003

Failure after creep rupture test (PE), click to zoom

Wiesbadener Kunststoffrohrtage 2003
(Congress and Exhibition on Polyolefine Pipes, Wiesbaden, 2003)

Presentation Dr. Hessel and booth showing samples
"Langzeituntersuchungen an geschweißten Rohren aus PE 100 - Heizelementstumpf- und Heizwendelschweißungen"
("Creep rupture tests on welded PE 100 - pipes
- heated tool butt welding
- electrofusion welding")

25./26. April 2002

discussions on the exhibition

Wiesbadener Kunststoffrohrtage 2002
(Congress and Exhibition on Polyolefine Pipes, Wiesbaden, 2002)

Presentation Dr. Hessel and booth showing samples
"100 Jahre Lebensdauer von abgequetschten PE-Rohren - Eine Frage der Werkstoffqualität"
("100 years service-life of squeezed PE-pipes - A matter of material quality")


Last Update: 1. January 2012


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