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Joining of ABS parts built by material extrusion: Analysis of strength and fracture behavior
CIRP Journal of Manufacturing Science and Technology ( IF 4.8 ) Pub Date : 2020-08-15 , DOI: 10.1016/j.cirpj.2020.07.008
Bitthal Saraf , Ashu Garg , Suman Saurav , Anirban Bhattacharya

The present work proposes an approach of joining the acrylonitrile butadiene styrene (ABS) parts built by material extrusion process using dimethyl ketone (acetone) maintaining different overlap regions to appraise the lap shear force, fracture behavior of bonded joints. The effect of four different raster angles (0°/90°, 15°/75°, 30°/60°, and 45°/-45°) were also investigated on lap shear strength of acetone bonded joints. Results indicate that the strength of acetone bonded joints was reasonably good and quite comparable when compared with single piece specimen. The highest bond strength was observed for specimen built with 45°/-45° and 0°/90° raster layers for joints with 12.7 and 25.4 mm overlap regions, respectively. Parts fabricated with 45°/-45° raster angle were also pre-treated with acetone vapors for different exposure times before joining with acetone to assess the effect on joint strength. The shear strength of acetone bonded joints significantly drops when the specimen was pre-treated with acetone vapor which further reduces with increase in exposure time. For acetone bonded joints, the stock-break failure with rupture and tearing of raster fibers with several tear ridges marks were also noticed.



中文翻译:

通过材料挤压连接的ABS零件的连接:强度和断裂行为分析

本工作提出了一种方法,该方法是通过使用二甲基酮(丙酮)维持不同的重叠区域来评估材料搭接剪切力,粘结接头的断裂行为,将通过材料挤压工艺制造的丙烯腈丁二烯苯乙烯(ABS)零件连接起来的。还研究了四种不同的光栅角度(0°/ 90°,15°/ 75°,30°/ 60°和45°/ -45°)对丙酮粘结接头的搭接剪切强度的影响。结果表明,与单件试样相比,丙酮键合接头的强度相当好,相当。对于分别具有12.7和25.4 mm重叠区域的接缝,用45°/ -45°和0°/ 90°栅格层构建的样品观察到最高的结合强度。在与丙酮连接之前,还用丙酮蒸气对以45°/ -45°栅格角制造的零件进行了不同的暴露时间预处理,以评估其对接头强度的影响。当样品用丙酮蒸汽预处理时,丙酮粘结的接头的剪切强度会明显下降,并随着暴露时间的增加而进一步降低。对于丙酮粘合的接头,还发现了断头失败,断裂和带有多个撕裂痕迹的光栅纤维撕裂。

更新日期:2020-08-16
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