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Magazine

Safer Helmets Reduce Potential for Traumatic Injury

  • Magazine Article
  • TBMG-36007
Published 2020-02-01 by Tech Briefs Media Group in United States

“Seventy-five percent of all fatal motorcycle accidents globally involve brain injury, with rotational forces acting on the brain being the primary cause of death,” According to NHTSA. By implementing a novel helmet design and materials set, KIRSH Helmets is to working to develop a more effective helmet for motorcycle riders, as well as in other applications. A patented design, in which fluid displacement technology replaces the typically used foam compression, utilizes a silicone liner injected with fluid. The resulting structure reduces rotational and angular forces during acceleration impacts.

5 Ws of Microlattice Pads for Improved Helmets

  • Magazine Article
  • TBMG-35984
Published 2020-02-01 by Tech Briefs Media Group in United States

Football players and other athletes, motorcycle riders, soldiers, and anyone wearing protective helmets made with the new microlattice pads will have greater protection from both single hits and a series of impacts.

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Acoustic Study on Motorcycle Helmets with Application of Novel Porous Material

AcouTech Lab, Dept of Mechanical and Industrial Engineering,-Jüri Lavrentjev, Hans Rämmal
  • Technical Paper
  • 2019-32-0531
Published 2020-01-24 by Society of Automotive Engineers of Japan in Japan
A critically high noise level inside protective helmet is a prevalent concern for motorcyclists. Especially at highway speeds where the noise level, regardless of helmet type can exceed 100 dB(A) and approaches threshold of discomfort, often resulting in temporary hearing loss. Despite of large share of persons exposed to such noise disturbance around the world, the in helmet noise levels have not significantly decreased over the last decades. Only few scientific publications can be found to systematically address this issue. Furthermore, in respect of driving safety even moderate noise levels are reported to impair reaction times and reduce attention of motorcyclists. At higher speeds the dominant helmet noise source is linked to aerodynamic turbulence around the helmet shell. The loudness and spectral contents mainly depend on the driving speed, windscreen configuration, riding position and helmet geometry. In this paper a series of on-road tests and laboratory experiments with three main types of helmets (“full face”, “flip up” and “open face” type) have been performed with the focus on in-helmet acoustics. Noise spectra at the location…
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Sensing Applied Load and Damage Effects in Composites with Nondestructive Techniques

Aerospace & Defense Technology: December 2019

  • Magazine Article
  • 19AERP12_08
Published 2019-12-01 by SAE International in United States

Comparing and correlating piezoelectrically induced guided waves, acoustic emission, thermography, and X-ray imaging to determine the effects of applied load on a composite structure.

Composite materials are desirable for aeronautical and aerospace applications for many reasons including their high strength-to-weight ratios, fatigue and corrosion resistance, design adaptability, and performance capabilities in harsh environments. Because of these qualities, composites are useful in many applications such as in armor, helmets, and helicopters, and as structural components.

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Sensing Applied Load and Damage Effects in Composites with Nondestructive Techniques

  • Magazine Article
  • TBMG-35672
Published 2019-12-01 by Tech Briefs Media Group in United States

Composite materials are desirable for aeronautical and aerospace applications for many reasons including their high strength-to-weight ratios, fatigue and corrosion resistance, design adaptability, and performance capabilities in harsh environments. Because of these qualities, composites are useful in many applications such as in armor, helmets, and helicopters, and as structural components.

Pearl-Like Coating Enhances Lightweight Armor

  • Magazine Article
  • TBMG-35453
Published 2019-11-01 by Tech Briefs Media Group in United States

By mimicking the outer coating of pearls (nacre or mother of pearl), researchers created a lightweight plastic that is 14 times stronger and eight times lighter (less dense) than steel. It could be applicable to vests, helmets, and other types of body armor as well as protective armor for ships, helicopters, and other vehicles.

Ballistic Helmets

  • Magazine Article
  • TBMG-34133
Published 2019-04-01 by Tech Briefs Media Group in United States

3M St. Paul, MN 888-364-3577

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Tech Briefs: August 2018

  • Magazine Issue
  • 18AERP08
Published 2018-08-01 by SAE International in United States
Designing a High-Speed Decoy Unmanned Aerial Vehicle (UAV)Using Thermoplastics in Aerospace ApplicationsIn-Flight Real-Time Avionics AdaptationUsing Turbine Flow Meters for Aerospace Test and Measurement ApplicationsCommunicating from Space: The Front End of Multiscale ModelingLaser-Based System Could Expand Space-to-Ground CommunicationHydraulic Testing of Polymer Matrix Composite 102mm Tube Section Research could lead to development of a composite material that can be processed at a low temperature and still be used at 1000°F.Permeation Tests on Polypropylene Fiber Materials Study attempts to determine if polypropylene nanofiber materials can be used in air filtration systems to remove toxic vapors.Inter-Laboratory Combat Helmet Blunt Impact Test Method Comparison Ensuring consistent test methods could reduce the risk of head injuries.

Inter-Laboratory Combat Helmet Blunt Impact Test Method Comparison

  • Magazine Article
  • TBMG-32726
Published 2018-08-01 by Tech Briefs Media Group in United States

As the medical community learns more about brain injury, the importance of blunt impact mitigation becomes more apparent. As such, it is critical to make sure that research labs are not only capable of performing testing in this field, but also show inter-laboratory consistency and reproducibility. This study is a comparison between the two validated blunt impact testing labs (Aberdeen Test Center (ATC) and National Technical Systems (NTS) Chesapeake Testing Services (CTS)), and Natick Soldier Research Development and Engineering Center (NSRDEC).

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Evaluation on Properties of Industrial Workers Safety Helmet Using Natural Hybrid Composite

Mepco Schlenk Engineering College-Thanikachalam J, Vasiraja N, Vignesh V
Published 2018-07-09 by SAE International in United States
In this project work, composites were prepared by using matrix method in which good adhesion was generated by a combination of hand layup method. This experiment was conducted to evaluate the suitability of natural fiber composites using luffa fiber, palm fiber and bamboo fiber and to fabricate the safety helmet by combining these three fibers. Initially these fibers were treated in sodium hydroxide solution in order to improve fiber interfacial bonding. Generally, composites that contain treated fiber have a higher tensile modulus and greater flexural modulus than do untreated fiber composites. Here using 40% fibers and 60% matrix for fabricating natural composites and to investigate its tensile strength, flexural strength, impact strength and hardness strength. It was observed that the effects of reinforcing epoxy resin matrix with the fibers caused the composites to be more flexible and easily deform due to high strain values and reduction of high resonant amplitude. In the present study, an attempt has been made to reinforce, epoxy resin matrix with this proportion of these natural fibers and to characterize its…
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