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The feature of high-frequency noise is poor penetration, which attenuates significantly as it travels farther or encounters obstacles
Glass fiber can pose significant risks to the human body when exposed for extended periods to environments containing it. Prolonged exposure can result in various health conditions, including eye damage, skin irritation, and respiratory issues.
Honeycomb panels are lightweight structural materials that offer several advantages in various applications. The following points further elaborate on the benefits and properties of honeycomb panels:
Continuous fiber reinforced thermoplastic(CFRT) honeycomb panels are composed of a honeycomb core and multi-layer continuous fiberglass reinforced layer. Continuous fiber reinforced composites include continuous fiber and thermal melt resin, Continuous fiber based composite materials are obtained by vacuum impact impregnation of continuous fibers in a molten thermoplastic resin. The core material is polypropylene pp with a honeycomb structure(round cell). Then laminated together with CFRT after thermal bonding.
The difference between specular reflection and diffuse reflection arises from the contrasting properties of the reflective surfaces involved. In the case of diffuse reflection, the surface is characterized by its unevenness, while specular reflection occurs on smooth surfaces.
In most primary and secondary school classrooms as well as office spaces, bare lighting fixtures are commonly used. However, the direct light emitted by these fixtures often creates glare, which can have a negative impact on the human eye, causing discomfort and visual fatigue. Glare can be classified into two categories based on its effect on visual function: dysfunctional glare and psychological glare. Dysfunctional glare physiologically impairs vision and affects the visual organs, while psychological glare, when experienced for prolonged periods, leads to feelings of discomfort and psychological distress. Severe glare can strain the eye muscles, causing distraction, difficulty in focusing, and significant damage to eyesight, particularly during the growth and development stages of adolescents.
