... will have a specific target which must be reached and is set at 90% of the ultimate value obtained during qualification testing. For this system, the ultimate Shore D hardness is 87, meaning a minimum hardness of 78 must be measured. Abstract For almost three decades, composite repair technology has...

...% sulfuric acid for periods of seven (7) days and 30 days at the same temperature used to cure. To test the full system, composite panels of 12”x6” (30.5x15.25cm) were also prepared with 4 layers (thickness) of the chosen fiber and the epoxy resin developed for this new system. From these panels, tensile...

...Abstract Titanium-based composites have the potential to be utilized in a range of applications where mechanical strength and corrosion resistance coupled with low density are advantageous. Lightweight structural composites were processed using a melt approach. The microstructures of these novel...

...Abstract Engineered Composite Repair (ECR) systems are a beneficial and efficient choice as a rehabilitation option for the oil and gas pipelines and piping networks. However, to successfully implement a process and utilize these systems, a greater understanding of the full range of requirements...

..., the composition and laminate structure verified, the adhesion strength and salt fog corrosion resistance determined. An independent third party conducted the laboratory testing. Their task was to conduct a series of tests to provide comparative corrosion resistance information on coated steel studs, nuts...

... is used, it may result in a functional repair that does not meet the full design requirements based on the specific situation. Abstract Composite materials are being widely implemented in a variety of repair scenarios within refineries – domestically and around the world. What may go unrecognized...

...Abstract Material testing and design is an important aspect of all Engineered Composite Repair (ECR) systems and have had many years of expert analysis to develop and support the testing involved to insure that the qualification testing is sufficient to perform successful repair designs. However...

... to have the lowest drop in Tg. FTIR results show spectrum peak differences between control and submerged samples, demonstrating changes in chain structures for all epoxies when submerged to harsh chemicals such as AcOH and EDC. chemical compatibility epoxies chemical aging composite composite repair...

... of composite rods patterned after ASTM ⁽¹⁾ D2992 & ASTM D3681 is the gold standard for determining corrosion performance of glass fiber reinforcements, but it takes a minimum of 14 months to complete if enough fixtures are available. A new method accomplishes a similar evaluation...

...A composite, or FRP wrap, has many advantages over both the clamp and pipe-replacement options. The wraps are geometrically conforming to the pipe, and the pipe's tensile stress in the local damage area is relieved through the use of a high-compressive strength fillers designed to effectively...

...Confirmation of this leaching was obtained by running EDX (Energy Dispersive X-ray) spectrometry on fibers in photos #3 & 4 with the locations of each sampling appearing with green numbers on the sampling locations. EDX is a fast and convenient tool for measuring the composition of glass...

...flexible pipe steel cord thermoplastic polymer composite CO₂ corrosion reinforced thermoplastic pipe RTP corrosion in confined environments INTRODUCTION Pipelines are a vital part of modern infrastructure systems. The low mechanical strength of polymer materials, however, makes...

...The Pipe System The composite pipe system, known as X200 ⁽¹⁾ , is a steel strip laminate technology which uses high-performance adhesives to manufacture a metallic composite pipe. It offers a new method of low cost pipeline construction suitable for onshore gas and oil pipelines...

...Abstract For non-load bearing applications using composite materials the polymer matrix typically governs the corrosion performance of the composite. However, in load bearing applications using glass fiber reinforced composite materials the choice of glass fibers is crucial for the long term...

... to cathodic disbondment ▪ Ability to be used over a wide range of substrates ▪ Good flexibility ▪ Durability (offering very long service lives) ▪ Cost effectiveness CASE HISTORIES It is little wonder therefore that these materials have been used as composite linings in a range of engineering...

... internal inspections are important factors to ensure the on-going successes seen today. hydrochloric acid HCl fiberglass composite FRP ASME RTP-1 oblation non-metallic INTRODUCTION A new product line to be installed at the owner’s facility required several large acid storage tanks. Materials...

...epoxy vinyl ester resin polyester resin fire retardant resin flame spread index smoke developed index ASTM E-84 FRP composite INTRODUCTION Fiber reinforced composites are very versatile materials that can be designed to meet mechanical property requirements and even have different...

... activities and daily life, and have more diversified applications than metals, issues related to polymer deterioration will receive more attention in the future. Polymeric materials are very diversified in their chemical composition, physical forms, mechanical properties and applications. Variations...

... resins have proven their superior resistance against a wide range of chemicals in combination with their excellent mechanical performance. In comparison with some other thermoset resins, epoxy vinyl ester resins offer superior thermomechanical properties. For some composites applications toughened epoxy...

...The fiber volume fraction and the filler content of the composite material were respectively 62% and 6% by weight of the resin. Table 4 shows the length of the specimens used for the physicochemical and mechanical measurements as well as the number of identical tests run on samples exposed...