In-Situ Cure-Induced Strain Measurements Using Optical Fiber Bragg Gratings for Residual Stress Determinations in Thermosets
Round 1
Reviewer 1 Report
Comments and Suggestions for AuthorsI attach my comments in a file
Comments for author File: 
Comments.pdf
Author Response
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Author Response File: Author Response.pdf
Reviewer 2 Report
Comments and Suggestions for AuthorsPlease see the attachment
Comments for author File: Comments.pdf
Author Response
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Author Response File: Author Response.pdf
Reviewer 3 Report
Comments and Suggestions for Authors
The object of research described in the manuscript is investigation of the strain in cured samples of thermoset materials, such as epoxies, polyester and polyurethane, using a Fiber Bragg Grating (FBG) strain sensor embedded in the sample of the cured material. This area of research is of interest to several research groups.
However, there are some issues that must be addressed prior to the publication of this manuscript.
First, the Introduction should be rewritten to be more communicative to a broader audience. In particular, the concept of the load transfer point should be presented in more detail. Figure 1 should be redrawn to include labels of key parts of the sample.
Second, description of the experiment is incomplete, as there is no information about the measurement equipment interrogating the Fiber Bragg Grating sensors. This information is important to people trying to replicate the experiments or assessing the accuracy of the measurements presented in the manuscript.
Third, no single reference to a book or a review article on the FBG sensor theory appears in Appendix A. This is surprising, as there are many articles and books to choose from, including classics, such as [1] or [2].
Finally, the novelty of the manuscript is borderline. Please consider stating it more clearly.
In conclusion, the manuscript cannot be published in its present form, before problems outlined in this review are addressed.
[1]P. K. Rastogi (ed.), Optical Measurement Techniques and Applications, Artech House Publishers (1997)
[2] A. Othonos, K. Kalli, Fiber Bragg Gratings: Fundamentals … , Artech House Publishers (1999)
Comments on the Quality of English Language
The manuscript requires extensive language editing, as there are several apparent mistakes.
Sentence-like structures without a verb (c.f. e.g. Line 26 or 92) should be rewritten. Inaccurate or colloquial terms and expressions, such as ‘no in situ measurement can be extracted’ (Line 81) or ’the wave-change of the FBG sensor’ (Line 101) or ‘a knock-down in the mechanical performance’ (Line 427) should be replaced with proper ones.
All basic grammar problems, such as use of proper verb forms ( e.g. ‘That experiment were designed’ at Line 57) and passive voice (‘sensor … will not be influence mechanical from the surrounding polymers’ at Line 473) must be fixed prior to the publication of this manuscript. Indefinite articles should be used properly (e.g. ‘A FBG sensor’ at Line 473).
As this reviewer is not a native English speaker, the Editorial Staff should decide what measures should be employed.
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Reviewer 4 Report
Comments and Suggestions for AuthorsPlease see attached
Comments for author File: Comments.pdf
Please use spell- and grammar checks in MS Word. Also please see attached
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Round 2
Reviewer 3 Report
Comments and Suggestions for AuthorsAll issues raised in my previous review were addressed properly.
The manuscript can be published now.
Reviewer 4 Report
Comments and Suggestions for AuthorsAll my recommendations are properly addressed. In my opinion, the paper can be published in its current form.
