For testing helmets, a novel suspension-based oblique impact test rig was designed. A helmeted headform is suspended from the test rig rather than being supported by a basket frame, and it separates from the apparatus just before impact to allow for unconstrained motion. Suspend-X proved useful for conducting helmet impact testing at various angles.
Additionally, within the same impact scenario, the test results demonstrated low CVs and great repeatability. The findings demonstrated that the suggested test rig can conduct oblique impact tests at a variety of angles without suffering damage.
By switching the test head, a helmet impact testing machine is used to evaluate a helmet’s resistance to impact and puncture. This helmet impact testing device complies with standards including GB/T 2812 and ISO 3873.
The pre-treated safety helmet is placed on the head mould, the load cell is rigidly installed between the base and the head mould, and then the falling weight is impacted from a height of 1m with a weight of 5 kg to freely strike the safety helmet.
The force sensing device gauges the amount of force present at the time of contact and uses this information to assess the helmet’s capacity to absorb shock. A 3 kg puncture cone is used to freely impact the helmet at a height of 1m during the test of the helmet’s puncture resistance.
This machine is designed to evaluate the impact resistance capabilities of fire helmets and is also capable of testing their anti-penetration capabilities. When determining the impact resistance of fire helmets, the high sensitivity sensor is placed inside a special head model with a good helmet (made of aluminium magnesium alloy materials), and the impact is made with a 5 kg hammer from a height of 1 m.
The high sensitivity strength induction device then determines whether the helmet shock absorption performance is good or bad based on the impact instantaneous force value.
To determine the helmet’s resistance to penetration, fix the head model to the base, connect the head model, the steel cone, and the electrical contact display device in a closed circuit, and puncture the helmet with a 3 kg steel cone dropped from a height of 1 m. After the puncture, observe the electrical contact display.
The Global Bike Helmet Impact Testing Machine market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
To reduce rotational head acceleration, which is a major cause of traumatic brain damage, a revolutionary cycling helmet idea has been devised (TBI). In order to create a rotational suspension, this WAVECELL idea uses a foldable cellular structure that is recessed into the helmet.
Other bicycle helmet technologies, such as the commercially available Multi-Directional Impact Protection System (MIPS) technology, which uses a slip liner to allow sliding between the helmet and the head during impact, are different from this cellular concept in that they do not mitigate rotational head acceleration.
This study evaluated the effectiveness of the MIPS helmet and the WAVES cellular idea in contrast to a conventional rigid expanded polystyrene bicycle helmet (EPS).
In guided vertical drop tests onto an inclined anvil, three different types of cycling helmets conventional EPS helmets (CONTROL group), helmets with a MIPS slip liner (SLIP group), and helmets with a WAVECELL cellular structure were subjected to oblique impacts (CELL group).
Utilising hits at 4.8 m/s against anvils tilted at 30°, 45°, and 60° from the horizontal plane, helmet performance was assessed. Additionally, the effectiveness of the helmet was tested upon the 45° anvil at a quicker speed of 6.2 m/s.
For each of the three groups, five helmets were evaluated under each of the four impact circumstances, totaling 60 helmets. To determine the damage risk threshold for a brain injury with an AIS 2 score, headform kinematics were collected and applied.
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