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Published byRocio Leslie Modified over 9 years ago
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Acoustic PVB Technology Extending the Frontiers of Performance Glazing
Applications Module: SoundForm & Function 1998 Version
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Topics Introduction to sound Basic principles of acoustics
Glazing acoustical performance Acoustic PVB technology Summary Applications Module: SoundForm & Function 1998 Version
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What is Sound? Pressure waves in air
Intensity can be measured at different wavelengths or frequencies
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Human Audio Capability
Human ear is sensitive to sound in range of Hz Hearing range 20 – 20k Hz Most sensitive hearing 500 – 8k Hz Human voice range 100 – 8k Hz Key voice range for conversation 2k – 6k Hz
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Threshold of Hearing Most sensitive
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Acoustics : Basic Principles
Sound Transmission Loss of a material = ability to minimize sound passing through it . . Receiver Source
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Sound Transmission Loss Spectrum (eg. : Monolithic Glass)
Critical Frequency Dip Applications Module: SoundForm & Function 1998 Version
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Sound Transmission Rating
A single number rating method to allow a single value to be given to a TL spectrum. Sound Transmission Class, STC Outdoor-Indoor Transmission Class, OITC Weighted Sound Reduction Index, Rw Applications Module: SoundForm & Function 1998 Version
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Glazing Acoustical Performance
Various types of glazing configurations : Monolithic Insulating Laminated Laminated Insulating Double Laminated Insulating Multi-ply Laminated Applications Module: SoundForm & Function 1998 Version
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Glazing Acoustical Performance
The three basic features Glass thickness Insulating glass air space thickness Interlayer damping Interlayer Glass Spacer Applications Module: SoundForm & Function 1998 Version
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Glazing Acoustical Performance Increasing Glass Thickness
Increase in glass thickness will increase sound insulation performance Highest STC for readily available glass is ~37 (for 12 mm glass) Applications Module: SoundForm & Function 1998 Version
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Glazing Acoustical Performance Increasing Glass Thickness
STC 37 STC 35 STC 32 STC 29 Applications Module: SoundForm & Function 1998 Version
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Glazing Acoustical Performance Airspace Insulating Glass
Creating an air space between two panes of glass also increase sound isolation performance Usually is most effective for an air space thickness >12mm Applications Module: SoundForm & Function 1998 Version
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Glazing Acoustical Performance Airspace Insulating Glass
STC 42 STC 40 STC 37 STC 32
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Glazing Acoustical Performance Laminated Glass
Using an interlayer in between 2 panes of glass (laminated glass) can create damping effect. Applications Module: SoundForm & Function 1998 Version
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Glazing Acoustical Performance Laminated Glass
Damping Performance from Interlayer STC 34 STC 32 Critical Frequency Dip Applications Module: SoundForm & Function 1998 Version
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Glazing Acoustical Performance Double Laminated Insulating Glass
STC 44 STC 42 Applications Module: SoundForm & Function 1998 Version
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Acoustics PVB Technology
Applications Module: SoundForm & Function 1998 Version
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Acoustics PVB Technology
PVB based interlayer with added damping properties compared to regular PVB. Applications Module: SoundForm & Function 1998 Version
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Acoustics PVB Technology
similar safety and impact performance compared to regular PVB of same thickness. added acoustic damping properties, enabling better sound insulating performance. no special handling & processing required from lamination standpoint. Applications Module: SoundForm & Function 1998 Version
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Acoustics PVB Technology Sound Transmission Loss (6mm)
STC 35 STC 34 STC 32 Applications Module: SoundForm & Function 1998 Version
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Automotive Adoptions Mercury Milan Mercedes S Class Ford F150 Platinum
Ford Focus Buick Enclave Buick Lacrosse Ford Taurus Applications Module: SoundForm & Function 1998 Version
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Summary Sound is pressure wave in air.
Human ear is sensitive to sound in range of Hz & respond is not linear Acoustic performance of glazing can be expressed by TL spectrum or single value rating. Acoustical performance of glazing can be improved by increasing glass thickness, air-space or using damping interlayer. Acoustic PVB uses tri-layer technology to further improve acoustic performance of glazing while maintaining the requirements of safety glass. Applications Module: SoundForm & Function 1998 Version
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Thank You www.saflex.com
Applications Module: SoundForm & Function 1998 Version
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