INVESTIGATION OF THERMAL AND ACOUSTIC PROPERTIES OF SANDWICH COMPOSITE STRUCTURES CONTAINING COATED FABRIC WITH DIFFERENT PROPERTIES

Sena Arslan; Öznur İskender

Makale detayları

INVESTIGATION OF THERMAL AND ACOUSTIC PROPERTIES OF SANDWICH COMPOSITE STRUCTURES CONTAINING COATED FABRIC WITH DIFFERENT PROPERTIES

Yazarlar:

Sena Arslan | Öznur İskender

Yayıncı:

Akdeniz University

Ana Başlıklar:

Kompozit ve Hibrit Malzemeler

Dergi:

Akdeniz Mühendislik Dergisi Vol.3 Issue 1, pp.86-97

Belge Tipi:

Makale

Yayın Tarihi:

1/2025

Belge Dili:

Türkçe

Document ID (Org No.):

2001338364

pISSN:

3023-624X

Anahtar kelimeler:

Özet:

 In motor vehicles such as buses, trucks, trailers, and passenger cars, composite materials are utilized to enhance driving comfort by providing thermal and acoustic insulation within the cabin. In this study, multi-layered structures were produced using a combination of coated felt and phenolic felt for the top and bottom layers, and single or double-layered configurations of coated fabrics, such as aluminum foil-coated fiberglass fabric, silicone-coated fiberglass fabric, and vermiculite-coated silica fabric, for the intermediate layers. The structures were fabricated in flat molds under conditions of 185C temperature, 170 bar pressure, and 120 seconds duration. The sound absorption coefficients of these structures were measured using an alpha cabin test device, and their thermal conductivity coefficients were determined using a thermal conductivity measurement device. The acoustic performance tests revealed that the K3 composite, consisting of phenolic felt, vermiculite-coated silica fabric, and phenolic felt sandwiched between two coated felts, was most effective at absorbing noise from the engine compartment. Evaluation of the thermal conductivity coefficients ranked the thermal insulation performance of the sandwich panels as follows: K1 K2 K3 K6 K4 K5. Based on the obtained data, it was determined that the K3 sample provides an optimal balance of acoustic and thermal insulation performance, making it the most suitable sandwich composite structure for these applications.

 In motor vehicles such as buses, trucks, trailers, and passenger cars, composite materials are utilized to enhance driving comfort by providing thermal and acoustic insulation within the cabin. In this study, multi-layered structures were produced using a combination of coated felt and phenolic felt for the top and bottom layers, and single or double-layered configurations of coated fabrics, such as aluminum foil-coated fiberglass fabric, silicone-coated fiberglass fabric, and vermiculite-coated silica fabric, for the intermediate layers. The structures were fabricated in flat molds under conditions of 185C temperature, 170 bar pressure, and 120 seconds duration. The sound absorption coefficients of these structures were measured using an alpha cabin test device, and their thermal conductivity coefficients were determined using a thermal conductivity measurement device. The acoustic performance tests revealed that the K3 composite, consisting of phenolic felt, vermiculite-coated silica fabric, and phenolic felt sandwiched between two coated felts, was most effective at absorbing noise from the engine compartment. Evaluation of the thermal conductivity coefficients ranked the thermal insulation performance of the sandwich panels as follows: K1 K2 K3 K6 K4 K5. Based on the obtained data, it was determined that the K3 sample provides an optimal balance of acoustic and thermal insulation performance, making it the most suitable sandwich composite structure for these applications.

 In motor vehicles such as buses, trucks, trailers, and passenger cars, composite materials are utilized to enhance driving comfort by providing thermal and acoustic insulation within the cabin. In this study, multi-layered structures were produced using a combination of coated felt and phenolic felt for the top and bottom layers, and single or double-layered configurations of coated fabrics, such as aluminum foil-coated fiberglass fabric, silicone-coated fiberglass fabric, and vermiculite-coated silica fabric, for the intermediate layers. The structures were fabricated in flat molds under conditions of 185C temperature, 170 bar pressure, and 120 seconds duration. The sound absorption coefficients of these structures were measured using an alpha cabin test device, and their thermal conductivity coefficients were determined using a thermal conductivity measurement device. The acoustic performance tests revealed that the K3 composite, consisting of phenolic felt, vermiculite-coated silica fabric, and phenolic felt sandwiched between two coated felts, was most effective at absorbing noise from the engine compartment. Evaluation of the thermal conductivity coefficients ranked the thermal insulation performance of the sandwich panels as follows: K1 K2 K3 K6 K4 K5. Based on the obtained data, it was determined that the K3 sample provides an optimal balance of acoustic and thermal insulation performance, making it the most suitable sandwich composite structure for these applications.

 Otobüs, kamyon, tır veya binek araç gibi farklı motorlu taşıtların iç kabininde, termal ve akustik izolasyon sağlayarak, sürüş konforunu artırmaya yönelik olarak kompozit malzemeler kullanılmaktadır. Bu çalışmada, alt ve üst katmanda kaplama telası ve fenolik keçe kombinasyonu, ara katmanlarda ise özellikle termal izolasyon özellikleri ile ön plana çıkan alüminyum folyo kaplı cam elyaf kumaş, silikon kaplı cam elyaf kumaş ve vermikülit kaplı silika kumaş gibi kaplamalı kumaşların tekli ve ikili kombinasyonları kullanılarak düz kalıpta 185C sıcaklık, 170 bar basınç ve 120 saniye süre ile çok katmanlı yapılar oluşturulmuş ve bu yapıların alfa kabin test cihazında ses yutum katsayıları, termal iletkenlik ölçüm cihazında ise termal iletkenlik katsayıları ölçülerek birbiri ile karşılaştırılmıştır. Akustik performans test sonuçları incelendiğinde, motor bölgesinde meydana gelen gürültülerin absopsiyonunu sağlamak üzere, iki kaplama telası arası, fenolik keçe, vermikülit kaplı silika kumaş ve fenolik keçe içeren K3 kompozisyonu olduğu tespit edilmiştir. Termal iletkenlik katsayısı sonuçları değerlendirildiğinde ise elde edilen sandviç plakaların termal izolasyon performansı K1 K2 K3 K6 K4 K5 şeklinde sıralanmaktadır. Elde edilen veriler göz önüne alındığında hem akustik hem de termal izolasyon performansını bir arada sunabilecek sandviç kompozit yapı K3 numunesi ile sağlanmıştır.

Makale detayları

INVESTIGATION OF THERMAL AND ACOUSTIC PROPERTIES OF SANDWICH COMPOSITE STRUCTURES CONTAINING COATED FABRIC WITH DIFFERENT PROPERTIES

Yazarlar:

Sena Arslan | Öznur İskender

Yayıncı:

Akdeniz University

Ana Başlıklar:

Kompozit ve Hibrit Malzemeler

Dergi:

Akdeniz Mühendislik Dergisi Vol.3 Issue 1, pp.86-97

Belge Tipi:

Makale

Yayın Tarihi:

1/2025

Belge Dili:

Türkçe

Document ID (Org No.):

2001338364

pISSN:

3023-624X

Acoustic Performance

Composite Material

Sandwich Structure

Thermal InsulationAkustik Performans

Kompozit Malzeme

Sandviç Yapı

Termal İzolasyon

Sayı

Makale detayları

Yazarlar: Sena Arslan | Öznur İskender

Yayıncı: Akdeniz University

Ana Başlıklar: Kompozit ve Hibrit Malzemeler

Dergi: Akdeniz Mühendislik Dergisi Vol.3 Issue 1, pp.86-97

Belge Tipi: Makale

Yayın Tarihi: 1/2025

Belge Dili: Türkçe

Document ID (Org No.): 2001338364

pISSN: 3023-624X

Sayı

Yazarlar:

Sena Arslan | Öznur İskender

Yayıncı:

Akdeniz University

Ana Başlıklar:

Kompozit ve Hibrit Malzemeler

Dergi:

Akdeniz Mühendislik Dergisi Vol.3 Issue 1, pp.86-97

Belge Tipi:

Makale

Yayın Tarihi:

1/2025

Belge Dili:

Türkçe

Document ID (Org No.):

2001338364

pISSN:

3023-624X