Dynamic Test of Retention System for Helmet IS 4151

Electric motorcycle travel is relatively green and environmentally friendly. However, there is a greater safety hazard without a helmet. A helmet is a device with extraordinary protective capabilities for the head, and is usually used in military training, combat, people’s transportation, and industrial production. The helmet is mostly semicircular and mainly consists of three parts: shell, lining and suspension device. Ancient helmets were mainly made of leather, cotton, linen and metal, and in modern times they are also made of resin or plastic.

There are strict technical standards for the manufacture of helmets, and inferior helmets often fail to meet the safety standards for collision prevention and cause danger. Many people may not know, how do you know that the helmet you bought is safe? In fact, simply judging whether the helmet is safe from whether the helmet is affixed with a certification mark cannot determine whether the helmet is safe, and there must be a corresponding test report and certification certificate. Mark certification is product-specific certification, focusing on the safety features of the product. It is a conformity certification that reflects the product’s requirements for public safety, health, environment and personal safety.

The helmet is placed on a head form and the chin strap fastened under a device approximating the contour of the jaw. The jaw piece is loaded with a 23 kg weight for approximately one minute. The retention system is tested by simultaneously removing the 23 kg weight and applying a 38 kg mass in an abrupt guided fall.	Dynamic Retention Test Method	Dynamic Test of Retention System for Helmet IS 4151
The retention system fails if it cannot support the mechanical loads or if the maximum instantaneous deflection (stretch) of the retention system exceeds 30 mm. Drop heights for the 38 kg mass are different for each standard; however the mechanism and failure criteria are similar for other types of headgear.
	Equipment Photo
IS 4151:1993 Indian Standard Protective Helmets For Motorcycle Riders – Specification	Test Standards
IS 2925: 1984 Specification For Industrial Safety Helmets
	IS 4151 Test Videos
Dynamic Retention System BSI｜Cadex Inc United States	Supplier & Manufacturers
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Manufacturer of Helmet Testing Machines as per IS:4151 in India
Dynamic Retention System, Dynamic Motorcycle Helmet Retention System, Dynamic Helmet Strap Retention Testing Machine, Dynamic Retention Tester, Helmet Stretch Test Machine.	Equipment Name
ECE R22.05 (UN R22.05) EN 1078 EN 1077 IS 4151 SLS 517	Test Standards