Recently, very rapid growth has been observed in the innovations and use of natural-fiber-
based materials and composites for acoustic applications due to their environmentally …

Excessive sound causes growing public well-being problems and significant environmental
contamination in our daily life. Generally, most of the noise problems are difficult to be …

Sound absorption panels are being used extensively to mitigate the problem of noise
pollution in buildings. Conventional materials used for sound absorption include glass wool …

Textile sector plays a key role in global economy, but these are associated with
environmental pollution having involvement of toxic chemicals and their discharge in …

Sound and heat insulation are among the most important concerns in modern life and
nonwoven composite structures are highly effective in noise reduction and heat insulation. In …

Thermal and sound insulation play a vital role in today's world, and nonwoven composite
structures including microfiber layers provide efficient solutions for addressing these …

The sound and heat insulation are among the most important concerns in modern life and
nonwoven composite structures are highly effective in noise reduction and heat insulation. In …

This thesis details the design and construction of an anechoic chamber for acoustic testing
and measurements of large UAS propellers. Three propellers are considered, as they are …

Seepage-induced internal erosion is and has for a long time been a matter of concern
regarding water-retaining earth structures. Uncertainties about which conditions can be …

The desire to gather acoustic data of a propeller in simulated hover without environmental
effects is met with the challenge of recirculating flow in a closed anechoic chamber. Flow …