Araştırma Makalesi
Yıl 2021,
, 359 - 370, 03.12.2021
Öz
Bu çalışmada, oda sıcaklığında izotaktik polipropilen üzerinde yükleme-boşaltma ve yeniden yükleme sonrası yapılan gevşeme testlerine dair gözlemler rapor edilmiştir. Deneysel veriler, gevşeme testinin başlangıcında maksimum gerilme ve başlangıç gerilmesi arasındaki farkın artmasıyla birlikte gevşeme eğrilerinin şekillerinde belirgin değişiklikler olduğunu göstermiştir. Testin başlangıcında gerilme geleneksel gevşemeden farklı olarak önce artıp sonra monoton olarak azalmaktadır. Basit gevşemeden karma gevşemeye geçişte ön yüklemenin etkisini araştırmak için farklı çevrim sayısı ve gerilme seviyelerinde testler gerçekleştirilmiştir.
Anahtar Kelimeler
Izotaktik polipropilen hasar birikimi çevrimsel deformasyon gevşeme.
Kaynakça
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- Brusselle-Dupend, N., & Cangémi, L. (2008). A two-phase model for the mechanical behaviour of semicrystalline polymers. Part I: Large strains multiaxial validation on HDPE. Mechanics of Materials, 40(9), 743–760. https://doi.org/10.1016/j.mechmat.2008.03.011
- Caelers, H. J. M., Govaert, L. E., & Peters, G. W. M. (2016). The prediction of mechanical performance of isotactic polypropylene on the basis of processing conditions. Polymer, 83, 116–128. https://doi.org/10.1016/j.polymer.2015.12.001
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- Dusunceli, Necmi. (2012). The unusual creep and relaxation behaviour of polypropylene. Journal of Polymer Engineering, 32(3), 167–176. https://doi.org/10.1515/polyeng-2011-0159
- Dusunceli, Necmi, & Aydemir, B. (2011). The effects of loading history and manufacturing methods on the mechanical behavior of high-density polyethylene. Journal of Elastomers and Plastics, 43(5), 451–468. https://doi.org/10.1177/0095244311404181
- Dusunceli, Necmi, & Colak, O. U. (2006). High density polyethylene (HDPE): Experiments and modeling. Mechanics of Time-Dependent Materials. https://doi.org/10.1007/s11043-007-9026-5
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Toplam 28 adet kaynakça vardır.
Ayrıntılar
| Birincil Dil | Türkçe |
|---|---|
| Konular | Makine Mühendisliği |
| Bölüm | Makine Mühendisliği |
| Yazarlar | |
| Yayımlanma Tarihi | 3 Aralık 2021 |
| Gönderilme Tarihi | 25 Ekim 2021 |
| Yayımlandığı Sayı | Yıl 2021 |