2018 Las-Vegas : Field test of Glass fiber reinforced polyethylene pipe system at soften ground
Author(s) : Mitsuaki TOKIYOSHI, Gentaro TAKAHARA, Joji HINOBAYASHI, Toshinori KAWABATA, Takashi KURIYAMA
Glass fiber reinforced polyethylene pipes and fittings are controlled for bending characteristics (Strength and stiffness) for vertical and axial directions of pipe by spiral cross winding method. Generally, to use this method, it takes much stronger for vertical strength than axials cause of extruded direction,...
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 : 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...
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...
2012 Barcelona : Estimation of surface void initiation of polyethylene pipes immersed in chlorinated water
Author(s) : Hiroyuki Kurio, Yuuji Yamamoto, Kenji Mizukawa, Takayoshi Yarimizu, Kentarou Nakata, Satoshi Saitou, Hisao Hirota and Takashi Kuriyama
In this paper, an acceleration test has been done to evaluate of the resistance of polyethylene pipes to the chlorinated water with varying the concentration of chlorine and test temperature. The surface defects like a void due to the delamination of film about 10-micron meter thickness were observed after the...
2010 Vancouver : Reliability of PVC-U Three Layer Pipes with Recycled Solid Core
Author(s) : Takashi KURIYAMA and Norio HIMUKAI
In order to make clear the reliability of PVC-U recycled pipes in relation to the three-layer
structure, we described the deformation and fracture mechanism of wall of pipes based on
non-destructive techniques of scanning acoustic microscopy (SAM). The results showed that
the multiple necking deformation occurred...
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...
1998 Gothenburg : Effects of processing conditions on the fracture toughness
Author(s) : Kuriyama, Narisawa, Shiina, Kotaki
Unplasticized polyvinylchloride (PVC-U) is extensively used in the pressure pipe applications. These pipes are usually designed to have 50 year lifetime. Although their service performance is generally very satisfactory , there has been a number of cases where the pipes fail at unexpectedly short times. One of the...