Effects of Low-Frequency Vibrations on Single Point Incremental Sheet Forming
Round 1
Reviewer 1 Report
This manuscript conducted a comprehensive investigation on the LFV-SPIF process. The effects of frequency and amplitude on the equivalent stress, strain and forming force were analyzed by using FE simulation and experiment. Some questions and suggestions:
- Introduction section, ‘On the other hand, the forming method using heat generated by rotational friction between the tool and the material’, pls revise this sentence for better expression.
- 4, True-strain—True strain, True-stress—True stress.
- The authors stated that the heat generation by the friction between the tools and the workpiece is benefit to the metal formability. But the heat generation from plastic deformation and friction are not mentioned in their simulation and experiments. If heat generation is needed to be considered, the tensile test should be conducted at various temperatures to obtain a more accurate simulation.
- 6 and Fig. 7 appeared in a inverse order. Fig. 6 is not needed, just give the parameters.
- For all the simulated field results, pls revise the color of the background to white.
- When analyze the deformation homogeneity, I suggest the author give some quantitively analysis by using statistic index.
- Did the author compared the microstructure of the parts formed by LFV-SPIF and conventional SPIF?
- No 7, the number of Equation 5 is wrong.
Author Response
Thank you very much for your comments and suggestions.
We have provided responses to the reviewer’s comments above. Please let us know if you have any additional questions or suggestions, and we will update the manuscript accordingly to ensure that it satisfies the publishing standards of Metals. We appreciate Editor and Reviewers' work earnestly and hope that the corrections will meet with an approval.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
The paper is well-written and structured and covers an interesting topic - experimentally and numerically. However, the following remarks/suggestions can contribute improving the quality of the paper:
- Introduction
- Materials and methods
- Experimental work procedure and tools design
- Numerical studies
- Results and discussion
So here, some examples of the numerical results can be shown and validated with the experimental results. So later, both of the results can be shown and discussed together or only numerical results can be shown, as the used modelling approach was earlier validated.
In the introduction, the language need to be improved.
Further comments are added in the pdf file in the corresponding positions.
Comments for author File: Comments.pdf
Author Response
We are honored to have this opportunity to communicate with the reviewer. At the same time, we sincerely thank you for your careful reading and valuable comments. Following your advice and suggestion, we have revised the manuscript 's structure sequential and other aspects. This not only improves the quality of our current manuscript, but also has a profound impact on our future research works and paper writing.
For the comments in the PDF file, please refer to the revised paper. And we used red fonts to indicate the corrected content.
Once again, thank you very much for your comments and suggestions.
Author Response File: Author Response.pdf
Reviewer 3 Report
The research work in this manuscript is a meaningful for comprehending the single point incremental forming process of AA1050 sheet under low-frequency vibrations. The manuscript is well constructed. However, the paper can be improved. Some mistakes or imprecisions need to be corrected throughout the publication:
There are some revisions as follows:
- In the table 2, the unit of KT,c is missing.
- Microstructure of the original specimens should be added in the study.
- The error bar should be added in figure 28.
- The surface roughness of the original specimen should be added in the study.
Author Response
Thank you very much for your comments and suggestions.
We have provided responses to the reviewer’s comments above. Please let us know if you have any additional questions or suggestions, and we will update the manuscript accordingly to ensure that it satisfies the publishing standards of Metals. We appreciate Editor and Reviewers' work earnestly and hope that the corrections will meet with an approval.
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
Agree to accept.
Reviewer 2 Report
Thanks for the corrections. The paper can be published in present form
