Search Results - "Voorwald, Herman J.C."

Effects of tungsten carbide thermal spray coating by HP/HVOF and hard chromium electroplating on AISI 4340 high strength steel by Nascimento, Marcelino P, Souza, Renato C, Miguel, Ivancy M, Pigatin, Walter L, Voorwald, Herman J.C

“…In cases of decorative and functional applications, chromium results in protection against wear and corrosion combined with chemical resistance and good…”
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The influence of carbon-glass/epoxy hybrid composite under mode I fatigue loading: Hybrid fiber bridging zone model by Monticeli, Francisco Maciel, Voorwald, Herman J.C., Cioffi, Maria Odila H.

“…A mechanistic model for mode I fatigue delamination growth based on the hybrid fiber bridging zone was developed and is described herein. The model is based on…”
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Cellulose fiber-reinforced high-density polyethylene composites—Mechanical and thermal properties by Mulinari, Daniella R, Voorwald, Herman JC, Cioffi, Maria OH, da Silva, Maria LCP

“…In this investigation, the thermal and mechanical properties of cellulose fibers from sugarcane bagasse reinforced with high density polyethylene composites…”
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Reducing repair dimension with variable scarf angles by Pitanga, Midori Y., Cioffi, Maria Odila H., Voorwald, Herman J.C., Wang, Chun H.

“…The increase in composites usage for primary and secondary structural components demands advanced repair techniques such as doubler, multi-step, and scarf to…”
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Sugarcane bagasse cellulose/HDPE composites obtained by extrusion by Mulinari, Daniella Regina, Voorwald, Herman J.C., Cioffi, Maria Odila H., da Silva, Maria Lúcia C.P., da Cruz, Tessie Gouvêa, Saron, Clodoaldo

“…Natural fibers used in this study were both pre-treated and modified residues from sugarcane bagasse. Polymer of high density polyethylene (HDPE) was employed…”
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Preparation and properties of HDPE/sugarcane bagasse cellulose composites obtained for thermokinetic mixer by Mulinari, Daniella R., Voorwald, Herman J.C., Cioffi, Maria Odila H., da Silva, Maria Lúcia C.P., Luz, Sandra M.

“…The use of natural fibers as reinforcement for thermoplastics has generated much interest due to their low cost, possibility of environmental protection and…”
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Effect of a Shot Peening Pre Treatment on the Fatigue Behaviour of Hard Chromium on Electroless Nickel Interlayer Coated AISI 4340 Aeronautical Steel by Nascimento, Marcelino P., Torres, Marcelo A.S., Souza, Renato C., Voorwald, Herman J.C.

“…Multiple layer systems of coatings are considered to have larger resistance to crack propagation in comparison to coatings with simple layer. With regard to…”
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Novel biodegradable composites based on PHBV: Effect of nanocellulose incorporation on the non‐isothermal crystallization kinetic and structural parameters by Benini, Kelly C.C.C., Ornaghi Júnior, Heitor L., Bianchi, Otavio, de Magalhães, Welington Ferreira, Henriques, Fernando Fulgêncio, Windmoller, Dario, Voorwald, Herman J.C., Cioffi, Maria O.H.

“…This study presents the non‐isothermal behavior of poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) (PHBV) biodegradable films with 1–5 wt% of cellulose…”
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Chemical modification effect on the mechanical properties of HIPS/coconut fiber composites by Carvalho, Kelly C. C., Mulinari, Daniella R., Voorwald, Herman J. C., Cioffi, Maria O. H.

“…Lignocellulosic fibers from green coconut fruit were treated with alkaline solution (NaOH 10%m/v) and then bleached with sodium chlorite (NaClO2) and acetic…”
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Fatigue strength of tungsten inert gas-repaired weld joints in airplane critical structures by Nascimento, Marcelino P., Voorwald, Herman J.C., Payão Filho, João da C.

“…In this work the effect of Gas Tungsten Arc Welding (GTAW) repairs on the axial fatigue strength of an AISI 4130 steel welded joint used in airframe critical…”
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Surface modification of sugarcane bagasse cellulose and its effect on mechanical and water absorption properties of sugarcane bagasse cellulose/HDPE composites by Mulinari, Daniella Regina, Voorwald, Herman J. C., Cioffi, Maria Odila H., Rocha, George J., Pinto Da Silva, Maria Lúcia C.

“…Cellulose fibres from sugarcane bagasse were bleached and modified by zirconium oxychloride in order to improve the mechanical properties of composites with…”
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Considerations on corrosion and weld repair effects on the fatigue strength of a steel structure critical to the flight-safety by Nascimento, Marcelino P., Voorwald, Herman J.C.

“…The aim of this study is to analyze the effects of corrosion and successive tungsten inert gas (TIG) welding repairs on the reverse bending fatigue strength of…”
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The Effect of WC-17co Thermal Spray Coating by HVOF and Hard Chromium Electroplating on the Fatigue Life and Abrasive Wear Resistance of AISI 4340 High Strength Steel by Souza, Renato C., Nascimento, Marcelino P., Voorwald, Herman J.C., Pigatin, Walter L.

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