The production principle of Sound Absorbing Panel relies heavily on material selection and structural design for effective sound wave absorption and noise isolation. The core function of acoustic panels is to reduce the impact of traffic noise on the surrounding environment, especially in places that are sensitive to noise such as close to residential areas, schools or hospitals. Below is a detailed explanation of how acoustic panels are manufactured and how they work:
Materials used for acoustic panels generally include sheet metal, concrete, fiberglass, wood and other composite materials. The commonly used materials are:
1. perforated metal plate: usually aluminum or galvanized steel, which is corrosion-resistant and durable, and achieves sound-absorbing function through its hole structure.
2. Sound-absorbing filler: the interior of sound-absorbing panels is usually filled with sound-absorbing materials, such as glass wool, mineral wool, polyurethane foam, etc., which can effectively absorb sound waves and reduce reflections.
3. Composite structure: some sound-absorbing panels may also be composed of multiple layers of materials, each layer of which has different acoustic properties, thus improving the overall sound-absorbing effect.
The working principle of sound-absorbing panels relies on two main mechanisms to reduce noise:
1. Acoustic absorption: sound waves through the sound-absorbing material, the fibers or foam structure inside the material can convert the kinetic energy of sound waves into thermal energy, thus reducing the reflection and propagation of sound waves. Different sound-absorbing materials have different absorption effects on different frequencies of sound waves, usually for the low-frequency noise absorption effect is better.
2. Acoustic reflection and scattering: the structural design of sound-absorbing panels can also reflect or scatter sound waves, so that sound waves can not directly reach the target area, reducing the spread of noise. For example, the surface of the sound-absorbing plate is designed as a perforated structure, which can effectively absorb part of the sound waves through the holes and gradually be absorbed in the plate.
How to produce highly highway acoustic panels? -- Sound Absorbing Panel Roll Forming Machine
1.Forming Machine of metal or other substrates: By pressing, cutting or rolling, metal or composite materials are made into panels and designed to have specific holes or concave-convex structures.
2. Filling of sound-absorbing materials: sound-absorbing materials (e.g. glass wool or polyurethane foam) are filled into the interior of the sheet to give it sound-absorbing properties.
3. Surface treatment: In order to prevent corrosion, waterproof and enhance durability, the surface of acoustic panels is usually sprayed, galvanized or laminated.
4. Mounting system design: The production process also takes into account the mounting methods of the acoustic panels, such as hooks and bolts, to ensure that they can be securely fixed on both sides of the highway.
In order to achieve the best possible noise control, design factors such as the shape of the acoustic panels, the size of the holes, the distribution of the holes, the thickness of the panels and the type of sound-absorbing material are optimized according to specific needs. Environmental factors such as the frequency range of the sound waves, distance from the noise source, wind speed and direction are usually taken into account in the design.