Method to Evaluate the Acoustic Performance of the Pillar Filler Foam in a Truck Cab

Jayasheela, Praveen; Patra, S. K.; Alvarez, Ricardo

doi:10.4271/2020-01-0505

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of foams for the absorption of acoustic vibrations in trucks has been investigated [1], but mainly considering polymeric foams which can have some concerns related to fire and temperature resistance and recyclability.…”

Section: Introductionmentioning

confidence: 99%

Al-Based Foams as Permanent Cores in Al Castings: Effect of Surface Skin Thickness and Composition on Infiltration and Core-Shell Bonding

Ferraris

Santostefano

Barbato³

et al. 2021

Metals

View full text Add to dashboard Cite

An emerging and still poorly explored application of aluminum foams is their potential use as permanent cores (inserts) in the casting of aluminum alloys. In this context, Al-based foams can introduce a weight reduction, the obtainment of cavities, a strength increase, the ability to absorb impact energy and vibration, acoustic insulation ability, the possibility to simplify the technological processes (no removal/recycling of traditional sand cores), and finally, they can be fully recyclable. Cymat-type Al foams with thin outer skin were used as permanent cores in Al-alloy gravity casting in the present research. Al-foams were characterized in terms of porosity, density, cell wall and skin thickness, surface chemical composition and morphology, and compression resistance. Cast objects with foam inserts were characterized by means of optical microscopy. The preservation of up to 50% of the initial porosity was observed for foam inserts with higher density. Metallurgical bonding between the foam core and the cast metal was observed in some regions.

show abstract

Section: Introductionmentioning

confidence: 99%