Constrained Layer Damping (CLD) is a system used for the suppression of vibrations. It is made of two sheets that are rigid but have poor damping properties. A viscoelastic or other damping material is placed between them. On vibration of the surface, the vibration is trapped between the two sheets and degenerated in the constrained layer as sheer energy. Vibration damping materials are widely used in automotive applications to dampen the vibration and sounds of road noise and the engine. Particle damping is used as a substitute to CLD due to its high efficiency and low costs.
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The automotive industry constantly aims at reducing vehicle weight while striving to improve the noise, vibration, and harshness performance. This results in the need for improved vehicle acoustic performance with lightweight acoustic materials, treatments, and components. CLD provides an efficient technique to subdue throbbing and sound in these structures. It comprises viscoelastic material layers with high stiffness, which are able to dissipate vibratory energy in the structure through sheer deformation of the viscoelastic layer. This is a major driver for the growth of the constrained layer damping market.
Constrained Layer Damping Market Taxonomy
The global constrained layer damping market is segmented on the basis of applications as:
- Engines and Power trains
- Oil Pans
- Valve Covers
- Engine Covers
- Push Rod Covers
- Transmission Covers
- Timing belt Covers
- Body structures
- Dash Panels
- Door panels
- Toe Pans
- Floor pans
- Wheel wells
- Cargo barriers
- Brakes
- Brake insulators
- Flex plates
- Braking plates
- Brake covers
- Brackets & accessories
- Roof Bows
- Cross Bars
- Steering Brackets
- Door latches
- Seat belts
The global constrained layer damping market is segmented on the basis of material as:
- Latex
- Butyl
- Polysulfide
- Silicone
- Polyurethane
- Vinyl
Most automobiles use vinyl, polyurethane, and butyl materials. They can be used as coatings or sealants and to produce products that take the form of sheets, foam, and tiles. It is essential that the damping material used has a strong bond to the required surface to provide extreme vibration reduction. CLD reduces interior noise and vibration by separating and absorbing noise vibrations, which are produced by the engine, suspension, and tires, which are the major sources of noise and vibrations. On the basis of application, CLD is used on a large scale in the production of body structures. This is due to the use of body structures in a variety of applications such as roof panels, door panels, floor panels, and hood panels which forms the important components of an automobile.
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Constrained Layer Damping Market Outlook
In North America, the U.S. is the major automobile producer. Mexico is experiencing a boost in demand for automobiles owing to the rising disposable incomes. These conditions compel automakers and suppliers in the U.S. to manage supply chains and factory usage cautiously in the U.S., while continuing to expand in Mexico. Hence, the global constrained layer damping market is expected to witness a steady growth over the forecast period in North America
The European Union has witnessed an improvement in automobile sales since the financial slump, however automakers in some E.U. nations such as Greece, Spain, and Portugal are still finding it difficult to grow their economies due to fragmented market condition and low profits
The global constrained layer damping market in Asia Pacific is driven by the increase in automobile production. The growing demand for automobiles in developing countries of China and India is expected to boost automobile sales in this region. Growing disposable incomes is a factor driving automobile sales in this region, which as a result boost the market demand for CLD as well. China, India, Japan are the largest automobile producers in the world
The rising infrastructure spend, buoyant private sector activity, and low interest rates in the Middle East act as major drivers for the growth of constrained layer damping market. Automobile sales in the Middle East is driven by high buying power and low fuel costs. Government subsidies also reduce automobile costs in this region. The growing demand for automobiles and availability of raw materials boost the growth of the global constrained layer damping market in this region
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In Latin America, the improvement of economic conditions of people in countries such as Brazil and Argentina has led to an increase in automobile sales in this region. The emerging markets provide the automotive market with major growth opportunities. This in turn boosts the global constrained layer damping market in Latin America.
Constrained Layer Damping Market Players
Some of the major players identified across the value chain of constrained layer damping market include Autoneum, 3M, Nitto, megasorber, VIbratek, Pyrotek, and Roush among others.
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