CAJ | 학술논문

以渗流法制备的宽孔径孔结构、周期孔结构及梯度孔结构三类非常规孔结构Al-Si12泡沫为芯材,制作了Al-Si12泡沫芯消声器,对其吸声性能进行了研究。结果表明,宽孔径孔结构Al-Si12泡沫芯消声器的吸声效果明显优于常规孔结构Al-Si12泡沫芯消声器;梯度孔结构Al-Si12泡沫芯消声器的吸声性能比宽孔径孔结构泡沫铝芯消声器优越;周期孔结构的泡沫铝芯消声器与宽孔径孔结构泡沫铝芯吸声性能相当;Al-Si12泡沫芯消声器的吸声性能与扩张室结构及流阻有关;与传统吸声材料芯消声器相比,宽孔径孔结构的Al-Si12泡沫芯消声器的吸声性能介于离心玻璃棉芯消声器及聚氨酯泡沫芯消声器之间。
이삼류법제비적관공경공결구、주기공결구급제도공결구삼류비상규공결구Al-Si12포말위심재,제작료Al-Si12포말심소성기,대기흡성성능진행료연구。결과표명,관공경공결구Al-Si12포말심소성기적흡성효과명현우우상규공결구Al-Si12포말심소성기;제도공결구Al-Si12포말심소성기적흡성성능비관공경공결구포말려심소성기우월;주기공결구적포말려심소성기여관공경공결구포말려심흡성성능상당;Al-Si12포말심소성기적흡성성능여확장실결구급류조유관;여전통흡성재료심소성기상비,관공경공결구적Al-Si12포말심소성기적흡성성능개우리심파리면심소성기급취안지포말심소성기지간。
The unconventional cell structure Al-Si12 foams,such as Al-Si12 foam with wide pore size range pore structure,Al-Si12 foam with periodic pore structure and Al-Si12 foam with gradient pore structure,were fabricated by infiltration method as the core materials of the mufflers.The sound absorption property of the unconventional cell Al-Si12 foam core muffler has been studied.The results shown as followings.The sound absorption property of the wide pore size range pore structure aluminum foam core muffler is obviously superior to these with traditional pore structure.The sound absorption performance of the gradient pore structure aluminum foam core muffler is much better than these with wide pore size range pore structure.The sound absorption performance of the periodic pore structure aluminum foam core muffler is as good as these with wide pore size range pore structure.The sound absorption performance of the Al-Si12 foam core muffler is related with expansion chamber structure and flow resistance.Compared with traditional sound absorption materials core muffler,the sound absorption property of the wide pore size range pore structure aluminum foam core muffler is situated between the polyurethane foam core muffler and the centrifugal glass cotton core muffler.