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Manufacturing hydrogen storage pressure vessels for automotive applications: filament winding improvements / Michael Pässler in SAMPE JOURNAL, Vol. 43, N° 3 (05-06/2007)

[article]  inSAMPE JOURNAL > Vol. 43, N° 3 (05-06/2007) . - p. 8-12 Titre : Manufacturing hydrogen storage pressure vessels for automotive applications: filament winding improvements Type de document : texte imprimé Auteurs : Michael Pässler, Auteur ; Ralf Schledjewski, Auteur Année de publication : 2007 Article en page(s) : p. 8-12 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 668.4 Plastiques, vinyles Résumé : Pressure vessel systems gain more and more importance especially for automotive applications, for example natural-gas powered vehicles or cars with hydrogen fuel cells or combustion engines. Within the scope of the EU FRP6 funded "StorHy Project" a ring winding head as an extension of a conventional filament winding machine was developed. Within this article the new concept, which is suitable to reduce the cycle time significantly, will be explained. The improvements concerning manufacturing efforts and resulting part properties will be shown and compared with conventional wet winding technology. Note de contenu : - Pressure vessel storage systems - Pressure vessel manufacturing approach - Highly efficient winding development - Multiple feed eyes and ring winding head - Pressure vessel testing Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23417 [article]

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Filament wound composite drill pipe: new capabilities for oil and gas drilling operations / J. C. Leslie in SAMPE JOURNAL, Vol. 43, N° 3 (05-06/2007)

[article]  inSAMPE JOURNAL > Vol. 43, N° 3 (05-06/2007) . - p. 18-25 Titre : Filament wound composite drill pipe: new capabilities for oil and gas drilling operations Type de document : texte imprimé Auteurs : J. C. Leslie, Auteur Année de publication : 2007 Article en page(s) : p. 18-25 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 668.4 Plastiques, vinyles Résumé : Composite drill pipe (CDP) can provide new capabilities for oil and gas drilling operations. CDP is approximately one half the weight of comparable metal drill pipe. The lighter weight drill pipe will provide a capability to substantially increase the depth and lateral reach possible in drill operations. CDP has much higher fatigue resistance than metallic drill pipe. Taking advantage of this capability, CDP has already been used to reopen "thought to be depleted (watered out) reservoirs" through Short Radius (SR) drilling operations. Wiring can be built into the walls of CDP. This provides a capability to simultaneously transmit real time data from the Bottom Hole Assembly (BHA) to the well head and power from the well head down to the BHA. Recognizing these potentials and the U.S. critical energy requirements, the U.S. Department of Energy, National Energy Technology Laboratory has funded programs to develop and qualify cos-effective composite drill pipe (Contract No. DE-FC26-99FT40262). The program was started in 1999. To date a six inch diameter CDP is being tested for mechanical properties. This CDP, in 30 foot (9.14 meter) sections, is approximately 1/2 the weight of its steel counterpart. The program is currently proceeding with additional laboratory evaluation of this ER/DW CDP and is beginning a "down well" demonstration of the 'in-the-wall' data and power transmission system. As a spin off from the above effort, development of two and one half inch (6.35 cm) CDP, qualified for short radius (horizontal well) drilling, has been successfully used to re-open "thought to be depleted" oil and gas wells. The initial short radius (SR/CDP) drill pipe was used in radii in the 50 (15.2 m) foot range. Recognizing a need to accomplish an even shorter drilling radius, an ultra short radius (USR/CDP) pipe was designed and is being evaluated for drilling radii as small as 30 feet (9.14m). Note de contenu : - EXTENDED REACH, DEEP WATER COMPOSITE DRILL PIPE - ENABLING TECHNOLOGY - COST ISSUES - 6 INCH (15.2CM) CDP FOR DEEP WATER AND EXTENDED REACH DRILLING - DEVELOPMENT AND CURRENT CDP STATUS - MATERIALS: TESTING AND SELECTION - TESTING OF PIPE SECTIONS - SHORT RADIUS COMPOSITE DRILL PIPE (SR/CD) - ADVANTAGE OF SR/CDP - EXPERIMENTAL FIELD EVALUATION OF SR/CDP - MANUFATURING OF CDP : Composite drill pipe manufacturing - Manufacturing of full scale CDP - DISCLAIMER Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23418 [article]

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Tailored blank fiber placed fabrication: high volume thermoplastic composite structures / Michael L. Skinner in SAMPE JOURNAL, Vol. 43, N° 3 (05-06/2007)

[article]  inSAMPE JOURNAL > Vol. 43, N° 3 (05-06/2007) . - p. 34-42 Titre : Tailored blank fiber placed fabrication: high volume thermoplastic composite structures Type de document : texte imprimé Auteurs : Michael L. Skinner, Auteur Année de publication : 2007 Article en page(s) : p. 34-42 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 668.4 Plastiques, vinyles Résumé : The patented Fiberforge® process for high volume thermoplastic structure fabrication consists of the following steps: tailored blank fabrication, thermoforming and trimming. Tailored blanks are fabricated using automated, high speed tape lay-up equipment. The blanks are flat and not fully consolidated during the lay-up process. The blanks are near net shape and the laminate structure is tailored for the application, thus minimizing material usage. The blanks can be consolidated in a bulk process (roller press or step press) if required. The thermoforming is done with matched tooling in a high pressure press giving high accuracy and good finish on both surfaces and very fast forming times. The advantages of the process are high speed and high volume structural part fabrication at low cost. The tape lay-up equipment is designed for high speed lay down of various reinforced thermoplastic tapes. Lay down rates of up to 1.5 meters (60 inches) per second are possible. A software package, written in Java, to generate patterns for the tape placement machine was developed. The software reads a DXF outline drawing of the blank and the user develops the desired laminate structure. Note de contenu : - INTRODUCTION : Lower materials cost - Lower manufacturing cost - Higher structural performance - TAILORED BLANKS - THERMOFORMING - AUTOMATED TAPE LAYUP MACHINE - TAILORED BLANK GENERATION SOFTWARE Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23419 [article]

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Resin transfer moulding: Novel fabrics and tow placement techniques in highly loaded carbon fibre composite aircraft spars / Andrew Mills in SAMPE JOURNAL, Vol. 43, N° 3 (05-06/2007)

[article]  inSAMPE JOURNAL > Vol. 43, N° 3 (05-06/2007) . - p. 67-72 Titre : Resin transfer moulding: Novel fabrics and tow placement techniques in highly loaded carbon fibre composite aircraft spars Type de document : texte imprimé Auteurs : Andrew Mills, Auteur ; Zahir Patel, Auteur ; Giuseppe Dell'Anno, Auteur ; Matthew Frost, Auteur Année de publication : 2007 Article en page(s) : p. 67-72 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 668.4 Plastiques, vinyles Résumé : A BAE Systems /UK EPSRC funded project Flaviir, is investigating the design and manufacture of low cost carbon fibre composite airframe structures. Novel binder coated unidirectional fibre tapes and tows were developed to enable the design of optimised primary structures. The RTM technique was applied to mould net shape sections of spar components. Various designs of wing attachment lugs were manufactured with a range of reinforcement materials, including non crimp fabric, novel binder coated tapes and conventional unidirectional prepreg. Alongside these, a novel technique termed optimised tow lay up (OTL) was used to reduce the weight. Binder coated carbon fibre tow is placed around the structure in the principal stress directions to increase both bearing strength and overall component stiffness. The novel materials, manufacturing technique and initial element test results are presented. Note de contenu : - Objectives - Spar Design - Test element design and manufacture - Tow arrangement investigation Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23420 [article]

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