OBJECTIVES A utility-scale wind turbine blade manufacturing plant requested assistance from the National Institute for Occupational Safety and Health (NIOSH) in controlling worker exposures to styrene at a plant that produced 37 and 42 m long fiber-reinforced wind turbine blades. The plant requested NIOSH assistance because previous air sampling conducted by the company indicated concerns about...

Abstract The fiber reinforced polymer (FRP) armor composites are kinds of composite materials specially designed and manufactured to prevent the penetration high-speed bullets fragments. FRP commonly composed reinforcing fibers, resin matrix their interfacial structures. vinyl ester (VER) is a kind thermosetting applied in field high performance bulletproof composites. However, VER has problem ...

In the current research, effect of cyclic temperature variation on mechanical and thermal properties woven carbon-fiber-reinforced polymer (CFRP) composites was investigated. To this, carbon fiber textiles in twill 2/2 pattern were used as reinforced phase epoxy, CFRPs fabricated by vacuum-assisted resin-infusion molding (VARIM) method. Thermal cycling process carried out between −40 +120 °C fo...

In this article, hybrid composite laminates with shape memory alloy (SMA) and glass fiber (GF) as the reinforced phase, and epoxy resin as the host material, were manufactured by vacuum-assisted resin injection (VARI) processing. The SMA wires were embedded into the GF/epoxy composites with three kinds of modes. The effect of SMA content and the position on the flexural, low-velocity impact per...

Introduction Nanocontact molding and other related techniques of imprint lithography have received much attention as potentially simple and inexpensive tools for the accurate replication of sub-100 nm features. We have recently reported on the use of this method for the replication of features as a small as 60 nm. In this technique, an inexpensive mold is made by curing a photopolymer resin aga...

Introduction Nanocontact molding and other related techniques of imprint lithography have received much attention as simple and inexpensive tools for the accurate replication of sub-100 nm features. We have recently reported on the use of this method for the replication of features as a small as 60 nm. In this technique, an inexpensive mold is made by curing a photopolymer resin against a patte...