The Vibration Dynamic Model for Blister Detection in Medium-Density Fiberboard

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

Refer to the attached document

Comments for author File: Comments.pdf

Comments on the Quality of English Language

There are a lot of grammatical and English wording errors. I would suggest the manuscript be checked by an English native speaker. 

Author Response

Reply to Reviewer #1

Dear Reviewers,

We are very grateful for the valuable time and effort you have invested in reviewing the manuscript, and we will respond to your valuable suggestions one by one. To facilitate this discussion, we first retype your comments in italic font and then present our responses to the comments. 

Comment 1:

There is a need to reword the title to suit the objectives of the study. I would suggest to delete the words “Study on” in the title.

Response 1:

We agree with your suggestion and have revised the title accordingly to better reflect the objectives of the study.

Comment 2:

The title must not contain the abbreviation. Therefore, delete the abbreviation “MDF” in the title.

Response 2:

We have removed the abbreviation “MDF” from the title and replaced it with its full form to ensure clarity for all readers.

Comment 3:

Do not repeat title words as key words.

Response 3:

We have revised the keywords to ensure they are distinct and relevant to the research without repeating the title words.

Comment 4:

The introduction could be strengthened by providing more context on the economic and environmental impacts of blister defects in MDF

Response 4:

Comment 5:

Section 2 “Detection of Blister Vibration Dynamics Model” should be reallocated. The appropriate location for this section is in the Materials and Methods.

Response 5:

 We have relocated Section 2 to the Materials and Methods section to maintain the logical flow of the manuscript.

Comment 6:

Use journals guideline when referencing in the manuscript. i.e. John [1] demonstrate that …..; According to Mary [2]; the production process of MDF [3].

Response 6:

We have carefully reviewed and updated all references to adhere to the journal’s guidelines.

Comment 7:

Delete the word “below” on line 208.

Response 7:

The word “below” has been removed as per your recommendation.

Comment 8:

Some of the figures are difficult to interpret due to poor resolution. Provide clear figures with better resolution.

Response 8:

 We have replaced the figures in question with high-resolution versions for better clarity and interpretation.

Comment 9:

Use Table editor to create tables

Response 9:

All tables have been reformatted using a table editor to enhance readability and presentation.

Comment 10:

)The statistical analysis section is somewhat limited. Providing a more detailed explanation of the methods used to validate the model would strengthen the manuscript

Response 10:

We have expanded the statistical analysis section, providing a comprehensive explanation of the validation methods employed in our study.

Comment 11:

There is a lack of discussion on the potential limitations of the study and how they might be addressed in future research

Response 11:

 A new section discussing the potential limitations and future research directions has been added to the manuscript.

Comment 12:

There are a lot of grammatical and English wording errors in the manuscript. I would suggest the manuscript be checked by an English native speaker.

Response 12:

The manuscript has been thoroughly reviewed and corrected by a native English speaker to ensure linguistic accuracy.

We would like to take this opportunity to thank you for all your time involved and this great opportunity for us to improve the manuscript. We hope you will find this revised version satisfactory. 

Sincerely,

The Authors

Reviewer 2 Report

Comments and Suggestions for Authors

L31 “1” should is a reference, but it different from all other references in the paper.

Section 3.1.  I am having great difficulty visualizing the specimen as described in the section and Figure 1 does not help.  Consider revising it to be more clear.  Maybe an overhead view as well.

L190 Were all of the excitations directly onto the blister?  Were there any tests where the input impact was not over the blister?

L210 Is this because the “lid” of the drum for a smaller and deeper blister is stiffer and therefore a higher frequency, with the opposite being true as well?  A shallow large blister has a lid that can deflect more for the same force and therefore is less stiff to bending?

Tables 2 and 3 should have the same formatting

Figure 4 would be more comparable if all figures were to the same scale, or if the theoretical and measured were plotted on the same images.

L245 Good that you pointed out the relationship to the square of the radius of the blister.  Helped explain the behavior very well.

Figure 5 would be more comparable if all figures were to the same scale, or if the theoretical and measured were plotted on the same images.

L291 the “-“ sign should be with the number.  It is easily missed on a separate line.

L325 This statement is overly bold at this time.  In reality, the location of the blister in the specimen is not known.  The method has to be proven in a situation where the specimen is impact at a fixed location with the blister located at differing points from the impact point and microphone.  I do believe it will work, but this statement isn’t supported fully by the results of the paper.

Author Response

Reply to Reviewer #2

Dear Reviewers,

We are very grateful for the valuable time and effort you have invested in reviewing the manuscript, and we will respond to your valuable suggestions one by one. To facilitate this discussion, we first retype your comments in italic font and then present our responses to the comments. 

Comment 1:

L31 “1” should is a reference, but it different from all other references in the paper.

Response 1:

Thank you for pointing this out. We have corrected the reference to ensure it is consistent with the format of the other references in the document.

Comment 2:

Section 3.1.  I am having great difficulty visualizing the specimen as described in the section and Figure 1 does not help.  Consider revising it to be more clear.  Maybe an overhead view as well.

Response 2:

We understand your concern and have revised the description of the specimen in Section 3.1, and added an overhead view to provide a clearer representation of the layout and details of the specimen.

Comment 3:

L190 Were all of the excitations directly onto the blister?  Were there any tests where the input impact was not over the blister?

Response 3:

All excitations were indeed directly onto the blister to ensure consistency in the experiments.

Comment 4:

L210 Is this because the “lid” of the drum for a smaller and deeper blister is stiffer and therefore a higher frequency, with the opposite being true as well?  A shallow large blister has a lid that can deflect more for the same force and therefore is less stiff to bending?

Response 4:

Your understanding is correct. The stiffness of the blister “lid” indeed affects its frequency response. A smaller and deeper blister results in a stiffer “lid,” leading to a higher frequency, while a larger and shallower blister can deflect more under the same force, indicating a less stiff structure. We have further clarified this point in the text.

Comment 5:

Tables 2 and 3 should have the same formatting.

Response 5:

 We have corrected the formatting to ensure that Tables 2 and 3 are consistent in format.

Comment 6:

Figure 4 would be more comparable if all figures were to the same scale, or if the theoretical and measured were plotted on the same images.

Response 6:

We have adjusted Figure 4 so that all figures are to the same scale and have plotted both theoretical and measured results on the same images to improve comparability.

Comment 7:

L245 Good that you pointed out the relationship to the square of the radius of the blister.  Helped explain the behavior very well.

Response 7:

Thank you for your positive feedback. We believe this point helps readers understand the blister behavior, and we will continue to include this explanation in the text.

Comment 8:

Figure 5 would be more comparable if all figures were to the same scale, or if the theoretical and measured were plotted on the same images.

Response 8:

 We have adjusted Figure 5 so that all figures are to the same scale and have plotted both theoretical and measured results on the same images to improve comparability.

Comment 9:

L291 the “-“ sign should be with the number.  It is easily missed on a separate line.

Response 9:

We have corrected this typographical error to ensure the “-” sign is with its corresponding number on the same line to avoid any potential confusion.

Comment 10:

L325 This statement is overly bold at this time.  In reality, the location of the blister in the specimen is not known.  The method has to be proven in a situation where the specimen is impact at a fixed location with the blister located at differing points from the impact point and microphone.  I do believe it will work, but this statement isn’t supported fully by the results of the paper.

Response 10:

We recognize that the statement may have been overly confident. Therefore, we have modified the text to reflect a more cautious assertion, acknowledging that while the initial results are encouraging, we agree that further validation of the method under the different conditions you suggested is necessary. 

We would like to take this opportunity to thank you for all your time involved and this great opportunity for us to improve the manuscript. We hope you will find this revised version satisfactory. 

Sincerely,

The Authors

Author Response File: Author Response.docx

Reviewer 3 Report

Comments and Suggestions for Authors

The main aim of this article is to develop a vibration dynamics model for detecting blister defects in MDF panels. However, the article's organization, especially regarding the citation of literature, needs improvement. I recommend that the authors resubmit their work, taking into account the following comments:

1-In the methods section, there is no mention of how the authors measured the natural frequencies of the first, second, and third modes.

2- The following citations are not referenced

(Pourjafar et al., 2022); ISO 16895:2016; (Waheed Gul et al., 2023); (A.J. Brunner 2006); (Ning Xu 2023); (Ataş and Soutis, 2013); (Sarasini and Santulli, 2014); (Boopathy et al., 2017b); F. Bos (2003)

3- Line, 113 “detection of blister vibration dynamics mode;” this part seems to be related to the Introduction part hence should not be divided in separated section

5- What are the sources of Equations 1-4?

6- Line 148 what does it mean “it can be found in the referened”?

7- Write an improved title for Figure 1

8- Figure 5, it is not a relationship between the thickness and frequency, make it clear for readers

9- The error analysis in the results is not mentioned in the Methods section.

10- The following references are not cited within the text:

Yoshihara, H (Yoshihara, Hiroshi) Jan 2015 MEASUREMENT 60, pp. 33-38

Yoshihara, H (Yoshihara, Hiroshi) Dec 2013 Comparison of results obtained by static 3-and 4-point bending and flexural vibration tests on solid wood, MDF, and 5-plywood HOLZFORSCHUNG 67 (8), pp. 941-948

Yoshihara, H (Yoshihara, Hiroshi) Examination of the Specimen Configuration and Analysis Method in the Flexural and Longitudinal Vibration Tests of Solid Wood and Wood-Based Materials. 2012 FOREST PRODUCTS JOURNAL 62 (3), pp. 191-200

Yoshihara, H (Yoshihara, Hiroshi) Bending Properties of Medium-Density Fiberboard and Plywood Obtained by CompressionBending Test 2011 FOREST PRODUCTS JOURNAL 61 (1), pp. 56-63

Guan, C (Guan, Cheng) Experimental and theoretical modal analysis of full-sized wood composite panels supported on four nodes. Materials 2017, 10, 683

Guan, C (Guan, Cheng) Measurement of Dynamic Viscoelasticity of Full-Size Wood Composite Panels Using a Vibration Testing 349 Method.May 2016 BIORESOURCES 11 (2), pp. 4593-4604

Guan, C (Guan, Cheng) Dynamic determination of modulus of elasticity of full-size wood composite panels using a vibration method. Dec 15 2015 CONSTRUCTION AND BUILDING MATERIALS 100, pp. 201-206

Zhou, JH (Zhou, Jianhui) Comparative study on measurement of elastic constants of wood-based panels using modal testing: choice of boundary conditions and calculation methods. Oct 2017 63 (5), pp. 523-538

Zhou, JH (Zhou, Jianhui) Simultaneous measurement of elastic constants of full-size engineered wood-based panels by modal testing. Jul 2016 HOLZFORSCHUNG 70 (7), pp. 673-682

Wang, Z (Wang, Zheng) Strain method for synchronous dynamic measurement of elastic, shear modulus and Poisson's ratio of wood and wood composites. Sep 10 2018 CONSTRUCTION AND BUILDING MATERIALS 182, pp. 608-619

B.H. Wang, Multivariate Statistical Analysis and Modeling for R Language, third ed., Jinan University Press, Guangzhou, 2014

GB/T 4897, Particleboard, National Technical Committee of Wood-based Panel Standardization, Beijing, China, 2015. 359

GB/T 4897, Particleboard, National Technical Committee of Wood-based Panel Standardization, Beijing, China, 2015. 359

B.H. Wang, Multivariate Statistical Analysis and Modeling for R Language, third ed., Jinan University Press, Guangzhou, 2014

 J.D. Mcnatt, Static bending properties of structural wood-base panels: large panel versus small-specimen tests, Forest Prod. J. 363 34 (4) (1984) 50–54

S. Ganev, Variability in OSB, Report, Forintek Canada Corp, Sainte-Foy, Canada, 1998.

R.J. Ross, R.F. Pellerin, NDE of wood-based composites with longitudinal stress waves, Forest Prod. J. 38 (5) (1988) 39–45

Author Response

Reply to Reviewer #3

Dear Reviewers,

We are very grateful for the valuable time and effort you have invested in reviewing the manuscript, and we will respond to your valuable suggestions one by one. To facilitate this discussion, we first retype your comments in italic font and then present our responses to the comments. 

Comment 1:

In the methods section, there is no mention of how the authors measured the natural frequencies of the first, second, and third modes.

Response 1:

We apologize for the oversight. We have now included a detailed description of the methods used to measure the natural frequencies of the first, second, and third modes in the methods section.

Comment 2:

The following citations are not referenced:(Pourjafar et al., 2022); ISO 16895:2016; (Waheed Gul et al., 2023); (A.J. Brunner 2006); (Ning Xu 2023); (Ataş and Soutis, 2013); (Sarasini and Santulli, 2014); (Boopathy et al., 2017b); F. Bos (2003).

Response 2:

We have reviewed the manuscript and ensured that all the mentioned citations are now properly referenced in the text.

Comment 3:

Line, 113 “detection of blister vibration dynamics mode;” this part seems to be related to the Introduction part hence should not be divided in separated section.

Response 3:

We agree with the reviewer’s suggestion. We have moved the mentioned part to the Introduction section to maintain the logical flow of the manuscript.

Comment 5:

What are the sources of Equations 1-4?

Response 5:

The sources of Equations 2-4 have been added to the manuscript. We have cited the relevant references where these equations were derived from.

Comment 6:

Line 148 what does it mean “it can be found in the referened”?

Response 6:

Sorry, we forgot to include the references after this sentence. It has now been corrected.

Comment 7:

Write an improved title for Figure 1.

Response 7:

 The title for Figure 1 has been revised to “Schematic diagram of the model”.

Comment 8:

 Figure 5, it is not a relationship between the thickness and frequency, make it clear for readers.

Response 8:

Thank you for your reminder. We have made the necessary changes as per your request.

Comment 9:

The error analysis in the results is not mentioned in the Methods section.

Response 9:

We have included a detailed description of the error analysis methods used in the results section in the Methods section.

Comment 10:

The following references are not cited within the text: Yoshihara, H (Yoshihara, Hiroshi) Jan 2015 MEASUREMENT 60, pp. 33-38

Yoshihara, H (Yoshihara, Hiroshi) Dec 2013 Comparison of results obtained by static 3-and 4-point bending and flexural vibration tests on solid wood, MDF, and 5-plywood HOLZFORSCHUNG 67 (8), pp. 941-948

Yoshihara, H (Yoshihara, Hiroshi) Examination of the Specimen Configuration and Analysis Method in the Flexural and Longitudinal Vibration Tests of Solid Wood and Wood-Based Materials. 2012 FOREST PRODUCTS JOURNAL 62 (3), pp. 191-200

Yoshihara, H (Yoshihara, Hiroshi) Bending Properties of Medium-Density Fiberboard and Plywood Obtained by CompressionBending Test 2011 FOREST PRODUCTS JOURNAL 61 (1), pp. 56-63

Guan, C (Guan, Cheng) Experimental and theoretical modal analysis of full-sized wood composite panels supported on four nodes. Materials 2017, 10, 683

Guan, C (Guan, Cheng) Measurement of Dynamic Viscoelasticity of Full-Size Wood Composite Panels Using a Vibration Testing 349 Method.May 2016 BIORESOURCES 11 (2), pp. 4593-4604

Guan, C (Guan, Cheng) Dynamic determination of modulus of elasticity of full-size wood composite panels using a vibration method. Dec 15 2015 CONSTRUCTION AND BUILDING MATERIALS 100, pp. 201-206

Zhou, JH (Zhou, Jianhui) Comparative study on measurement of elastic constants of wood-based panels using modal testing: choice of boundary conditions and calculation methods. Oct 2017 63 (5), pp. 523-538

Zhou, JH (Zhou, Jianhui) Simultaneous measurement of elastic constants of full-size engineered wood-based panels by modal testing. Jul 2016 HOLZFORSCHUNG 70 (7), pp. 673-682

Wang, Z (Wang, Zheng) Strain method for synchronous dynamic measurement of elastic, shear modulus and Poisson's ratio of wood and wood composites. Sep 10 2018 CONSTRUCTION AND BUILDING MATERIALS 182, pp. 608-619

B.H. Wang, Multivariate Statistical Analysis and Modeling for R Language, third ed., Jinan University Press, Guangzhou, 2014

GB/T 4897, Particleboard, National Technical Committee of Wood-based Panel Standardization, Beijing, China, 2015. 359

GB/T 4897, Particleboard, National Technical Committee of Wood-based Panel Standardization, Beijing, China, 2015. 359

B.H. Wang, Multivariate Statistical Analysis and Modeling for R Language, third ed., Jinan University Press, Guangzhou, 2014

 J.D. Mcnatt, Static bending properties of structural wood-base panels: large panel versus small-specimen tests, Forest Prod. J. 363 34 (4) (1984) 50–54

1998. Ganev, Variability in OSB, Report, Forintek Canada Corp, Sainte-Foy, Canada, 1998.

R.J. Ross, R.F. Pellerin, NDE of wood-based composites with longitudinal stress waves, Forest Prod. J. 38 (5) (1988) 39–45

Response 10:

We have removed the uncited references and cited the references according to the journal’s specifications.

We would like to take this opportunity to thank you for all your time involved and this great opportunity for us to improve the manuscript. We hope you will find this revised version satisfactory. 

Sincerely,

The Authors

Author Response File: Author Response.docx