针对1561铝合金的应用需求,开展1561铝合金双丝冷金属过渡焊接(Cold Metal Transfer Welding, CMT)工艺试验。对试验材料、装配要求、焊缝质量要求和作业要求进行论述,并从目视检测、渗透检测、断面宏观检验、常规力学性能、耐腐蚀性能...针对1561铝合金的应用需求,开展1561铝合金双丝冷金属过渡焊接(Cold Metal Transfer Welding, CMT)工艺试验。对试验材料、装配要求、焊缝质量要求和作业要求进行论述,并从目视检测、渗透检测、断面宏观检验、常规力学性能、耐腐蚀性能和疲劳性能等方面对1561铝合金双丝CMT试验结果进行分析。试验结果表明,1561铝合金双丝CMT工艺性能优良,可满足技术指标要求。展开更多
In order to compare the effects of visual and auditory instructions on the crew when guiding astronauts to complete the procedural tasks in the space station,in this study,subjects were recruited to complete the progr...In order to compare the effects of visual and auditory instructions on the crew when guiding astronauts to complete the procedural tasks in the space station,in this study,subjects were recruited to complete the programmed task of starting from the node module,locating the scientific cabinet and spectrometer,and finally operating the orbital replaceable unit on the spectrometer.Meanwhile,the task performance,eye movement parameters,and cognitive load induced by 2 kinds of instructions in the task were statistically analyzed.The results showed that there were highly significant differences in terms of task completion time,the NASA-TLX(Task Load Index)total score,and eye movement index between the 2 instructions(P<0.01).There were also significant differences in error rate and effort(P<0.05).This study proves that visual instruction interaction is better than auditory instruction.Our work provides important reference for the selection of human–computer interaction mode for procedural tasks on space stations.It also provides the experience and theoretical evidence missing so far and proves the benefits of augmented reality assistance in terms of task performance and human factors.展开更多
文摘针对1561铝合金的应用需求,开展1561铝合金双丝冷金属过渡焊接(Cold Metal Transfer Welding, CMT)工艺试验。对试验材料、装配要求、焊缝质量要求和作业要求进行论述,并从目视检测、渗透检测、断面宏观检验、常规力学性能、耐腐蚀性能和疲劳性能等方面对1561铝合金双丝CMT试验结果进行分析。试验结果表明,1561铝合金双丝CMT工艺性能优良,可满足技术指标要求。
基金supported by the Foundation Strengthening Project(2021-JCJQ-JJ-1042)the Foundation of National Key Laboratory of Human Factors Engineering(6142222210301).
文摘In order to compare the effects of visual and auditory instructions on the crew when guiding astronauts to complete the procedural tasks in the space station,in this study,subjects were recruited to complete the programmed task of starting from the node module,locating the scientific cabinet and spectrometer,and finally operating the orbital replaceable unit on the spectrometer.Meanwhile,the task performance,eye movement parameters,and cognitive load induced by 2 kinds of instructions in the task were statistically analyzed.The results showed that there were highly significant differences in terms of task completion time,the NASA-TLX(Task Load Index)total score,and eye movement index between the 2 instructions(P<0.01).There were also significant differences in error rate and effort(P<0.05).This study proves that visual instruction interaction is better than auditory instruction.Our work provides important reference for the selection of human–computer interaction mode for procedural tasks on space stations.It also provides the experience and theoretical evidence missing so far and proves the benefits of augmented reality assistance in terms of task performance and human factors.
