Variable Velocity Coating Thickness Distribution Model for Super-Large Planar Robot Spraying

Round 1

Reviewer 1 Report

1.     The abstract does not mention the optimisation methods, such as response surface methodology, Taguchi method, etc.

2.     The format of citations is not standardized. For example, (Ref 15) and [16](line#142).

3.     Please include the optimization method used in the methodology.

4.     Please correct the symbol of the micrometre (µ) used in lines #279 and 280.

5.     What is the repeating number for each point in Figure 12(b)?

6.     The percentage of discrepancy is not analyzed in the experimental verification.

7.     What is the thickness of the spraying result in the experiment?

 

8.     Please include the quantitative results in the conclusion.

Author Response

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Author Response File: Author Response.pdf

Reviewer 2 Report

Comments for coatings-2502028

Title: Variable velocity coating thickness distribution model for super-large planar robot Spraying

 

This study presents a dynamic optimization method for spray gun flow to address the issue of uneven film thickness in the acceleration and deceleration section of the z-shaped spray trajectory in large plane ship segmentation. The method considers the acceleration and deceleration section of the spray trajectory and improves the distribution of film thickness. The study also establishes a static vertical spray coating growth model without considering the acceleration and deceleration of the spray trajectory, and then uses an integral method to optimize coating uniformity and establish a film thickness distribution model.

Major amendments are listed as follows:

 

1. The introduction should provide more background information on the issue of uneven film thickness in ship segmentation and why it is important to address this issue.

2. The description and analysis section should provide more details on how the static vertical spray coating growth model was established and how the integral method was used to optimize coating uniformity.

3. It would be helpful to provide more useful explanation on the pattern search method used to determine the flow of the spray gun at different speeds in the acceleration and deceleration sections.

4. The numerical simulation and simulation experiment section (section 3) should include specific numerical values or statistical analysis to support the claim that variable flow leads to more uniform film thickness compared to constant flow.

5. The experimental verification section (section 4) should provide a more in-depth analysis of the implications and potential applications of the proposed method.

6. It would be beneficial to include limitations and future research directions in the conclusion section.

7. The paper would benefit from a more concise and clear writing style, with less repetition of information. For instance, only in the 1st paragraph of section 1:

- The phrase "spraying robots are advanced automatic spraying equipment" should be revised to "spraying robots are advanced automatic spraying equipment."
- The phrase "widely used in automobile and other fields of spraying operations" should be revised to "widely used in the automobile and other fields of spraying operations."
- The phrase "they are rarely used in the spraying of ship segmentation" should be revised to "they are rarely used in ship segmentation spraying."
- The phrase "due to the large size of ship segmentation" should be revised to "due to the large size of ship segments."
- The phrase "the generally single-piece spraying process" should be revised to "the typically single-piece spraying process."
- The phrase "Consequently, the spraying of large ship segmentation is mainly carried out manually" should be revised to "As a result, large ship segmentation spraying is mainly carried out manually."
- The phrase "which has disadvantages such as low work efficiency, uneven film thickness, and high labor intensity for spraying workers" should be revised to "resulting in drawbacks such as low work efficiency, uneven film thickness, and high labor intensity for spraying workers."
- The phrase "In recent years, many scholars have paid more attention to the application of spraying robots in the shipbuilding industry" should be revised to "In recent years, there has been an increasing focus among scholars on utilizing spraying robots in the shipbuilding industry."
- The phrase "in order to reduce the influence of these factors" should be revised to "to mitigate these issues."

Please see comment #7.

 

Author Response

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Author Response File: Author Response.pdf

Reviewer 3 Report

 

Title - Variable velocity coating thickness distribution model for super-large planar robot Spraying

The research paper is a decent contribution to engineering research. The paper is well-written and discussed everything in detail. The project also has good real-world applications.  

Here are my comments:

1.     The author should explicitly provide justification for the novelty of the research within the manuscript itself.

2.     There is no literature review that supports the novelty of the research. Kindly provide enough literature review to strongly justify the novelty of your research.

3.     Some images are not very clear like Figure 2. Kindly provide good-quality pictures. Do also label all the figures.

4.     Kindly also explain Figure 6 properly in the manuscript. What is the top point mean in the surface you have generated? 

5.     Kindly properly specify what that red area means in Figure 14 (a). Kindly label it for better clarification.

 

 

Comments for author File: Comments.docx

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Round 2

Reviewer 2 Report

The revised manuscript looks fine and can be considered for publication in Coatings.  Congratulations!

Author Response

We appreciate the time and effort you have put into providing feedback on our manuscript and appreciate the insightful comments and valuable improvements you have made to our paper