2016 Berlin : Development of the ring fatigue testing method for composite pipes
Author(s) : Yuji Higuchi, Rei Hyuga, Kazushi Yamada, Hiroyuki Nishimura
Recently, thermoplastic-based composite pipes have been developed in order to satisfy the higher requirements for gas and water distribution. Although the stress rupture test is now the major test method used to evaluate the long-term performance of these pipes, developing a new, convenient test method making it...
2016 Berlin : Evaluation of earthquake damage of PVC pipes for water distribution in japan
Author(s) : Yuichiro Goto, Hiroyuki Nishimura
The damage of PVC pipes caused by the great earthquakes was investigated in Japan by various organizations including public and private institutions. As a result of these investigations it is found that high-impact modified PVC pipes with the long insertion length have the least failures. Moreover it is also reported...
2016 Berlin : Latest technology of saddle scraper for polyethylene pipe
Author(s) : Takehiro Fujii, Hideo Hirabayashi, Kazushi Yamada, Hiroyuki Nishimura
It is important to stabilize the scraped surface of the polyethylene pipe, even if some operator scrape the surface of the polyethylene pipe. In Japan this automatic saddle scraper is widely used for improving workability and plumbing quality
The newly developed “Automatic saddle scraper” consists of the casing unit...
2016 Berlin : Long-term behavior of glass fiber reinforced polyethylene
Author(s) : Mitsuaki Tokiyoshi, Philippe Vanspeybroeck, Kensei Inoue, Stephan Fullgrabe, Takashi Kuriyama, Toshinori Kawabata, Joji Hinobayashi
Big diameter polyethylene pipes used an important role due to superior performance (Flexibility, light weight, long lifetime and tighten joint) for water and industrial supply to several countries. However according to standard concerned Polyethylene pipes as like ISO4427 we are being used solid wall pipe with too...
2014 Chicago : Countermeasures against Deterioration in Non-Cross-Linked Polyethylene Pipes
Author(s) : Kazuhisa Igawa, Yuji Higuchi, Daisuke Tanemura, Kazushi Yamada, Hiroyuki Nishimura, Sakiko Fukunishi, Kazufumi Kohno, Hidekazu Honma, Hidekazu Sugimori
Recently, as awareness about energy-saving is increasing, high-efficiency energy systems have been developed and introduced. In addition, public and private sectors have simultaneously been implementing various efforts aiming to improve their prevalence rates. These initiatives are represented by the Cogeneration Gas...
2014 Chicago : Development of the Ring Creep Test Method for Composite Pipes
Author(s) : Yuji Higuchi, Tomohiro Tanishita, Kazushi Yamada, Hiroyuki Nishimura
Recently, PE resin-back composite pipes have been developed in order to satisfy the higher requirements for gas and water distribution. Although the stress rupture test is now the major test method used to evaluate the long-term performance of these pipes, developing a new, convenient test method making it possible to...
2014 Chicago : Exploring the Japanese Market for Polyamide 12 Pipes
Author(s) : Yuji Higuchi, Kazuhiro Nishimoto, Takeshi Mise, Eiji Takenaka, Markus Hartmann
This study explores the Japanese market for polyamide 12 (PA12) pipes in terms of new product market success. To gain the market penetration, there are various entry barriers for the new product in the new market field which has big distance between current marketing areas and target country. In spite of becoming...
2014 Chicago : Performance of Polyethylene Pipes with Glass Fiber
Author(s) : M.Tokiyoshi, H.Kudo, M.Endo, K.Inoue, N.Shibasaki, T.Nakayama, H.Matsukuma, M.Kodera, Y.Niinomi, M.Masuko, P.Vanspeybroeck
Polyethylene pipes are successful worldwide due to the superior performance (Flexibility, light weight, lifetime, tighten joint) for water and sewerage supply. However according to our ISO standard concerned Polyethylene pipes we have to use solid wall pipe with too thick against for internal pressure. The major job...
2012 Barcelona : Estimation concerning the damage tolerance of plastic pipes by third parties
Author(s) : Yuji Higuchi, Masaaki Ishikawa, Toshiaki Furuno, Eiji Okamura, Masahiro Mutoh, Hiroyuki Nishimura, Asami Nakai, Hiroyuki Hamada
Pipe materials that are resistant to damage by thirty-party works were investigated with attention to materials already used for other purposes. Pipes for underwater cables, water service and agricultural use, both multiple-layer and single-layer types, were selected for the test. Protective materials were also...
2006 Washington DC : Development of the Innovative Technology for Aged House Pipes
Author(s) : Akiyama, Higuchi, Nose, Toyoda, Kitano, Kuriyama
Since the year 2001, the Japan Gas Association has started the development of new renewal
methods capable of cost reduction for modification work by inserting a new double-layered
corrugated plastic pipe into the old gas pipe to encourage the modification of aged house pipes
and upgrade the level of safety. The...
2006 Washington DC : Fabrication and Evaluation of PE-Based Composite Gas Pipe
Author(s) : Higuchi, Nakai, Hamada
To realize a polyethylene pipe with high strength and a high modulus of elasticity, a
polyethylene based composite pipe was tentatively fabricated. To retain the plasticity of the
composite pipe, polyethylene yarns were used as reinforcement. It was an interface-less
composite because the reinforcement and the pipe...
2001 Munich : Electrofusion Joint Strength of PE Pipes
Author(s) : Nishimura, Inoue, Inoue, Tani, Higuchi
Electrofusion (EF) joints have been widely used as easy-to-fuse and high-quality
joints for joining polyethylene (PE) pipes. When we introduced EF joints 150 mm or
more in diameter, an electrofusion simulation program was concurrently developed to
reduce time for design and experimental works. It was verified that the...