An Investigation into the Mechanical and Wear Characteristics of Hybrid Composites: Influence of Different Types and Content of Biodegradable Reinforcements

ABSTRACT

This research work focuses on the wear characteristics of hybrid composites prepared using Sisal fiber (SF) /Pineapple fiber (PF) and Pineapple fly ash (PA) in various wt.%. Linear reciprocating tribometer was used for determining the Specific Wear Rate (SWR) and Coefficient of Friction (CoF) of the hybrid composites. The XRF results of PA filler showed the existence of silica (64.43%) and aluminum oxide (10.03%) in a major percentage. The hybrid fiber combination of 30-50 wt.% showed improvement in Tensile Strength (TS), Flexural Strength (FS) and Impact Strength (IS) with the filler mixing up to 5 wt.%. The Taguchi optimization (SN graph) observed the combination with PA addition of 5 wt.%, hybrid fiber addition of 30 wt.%, sliding distance and load of 1500 m, 10 N having lower SWR. Similarly for lower CoF, fly ash of 1 wt.%, fiber of 30 wt.%, sliding distance and load of 500 m and 5 N, respectively, with high SN ratio is the best combination. SEM results showed a decrease in filler content, higher load conditions, higher reinforcement causing more surface deformations in the composites.

摘要

研究了剑麻纤维/菠萝纤维（PF）和菠萝粉煤灰（PA）在不同重量%下制备的混杂复合材料的磨损特性. 采用线性往复摩擦磨损仪测定了混杂复合材料的比磨损率（SWR）和摩擦系数（CoF）. PA填料的XRF分析结果显示二氧化硅（64.43%）和氧化铝（10.03%）占主要比例. 当填料掺量达到5 wt.%时，混杂纤维的拉伸强度（TS）、弯曲强度（FS）和冲击强度（IS）均得到改善. 田口优化（SN图）观察到PA添加量为5%，混杂纤维添加量为30%，滑动距离和载荷为1500m，10n的组合具有较低的SWR. 同样，对于较低的CoF，粉煤灰质量分数为1%，纤维质量分数为30%，滑动距离为500m，荷载为5n时，高SN比为最佳组合. SEM结果表明，填料含量的降低、载荷条件的提高、增强材料的增强作用使复合材料的表面变形增大.

KEYWORDS:

• Hybrid composites
• wear
• morphology
• Taguchi optimization
• ANOVA
• reciprocating tribometer

关键词:

• 混杂复合材料
• 磨损
• 形态学
• 田口优化
• 方差分析
• 往复式摩擦计