Multifunctional MEN-Doped Adhesives: Strengthening, Bond Quality Evaluation, and Variations in Magnetic Signal with Environmental Exposure

Round 1

Reviewer 1 Report

The work could be interesting but introduction should be improved to clarify the state of the art and the novelty of this work. In general relevant details are missing (for example experimental values are given as approximate number while mean and standard deviation shoud be provided) and the information should be presented in more logical and linear flow. I strongly raccommend to add figure reporting force-displacement curves and specimens pictures after testing.

Comments for author File: Comments.pdf

Author Response

Please see the attachment

Author Response File: Author Response.pdf

Reviewer 2 Report

This is very interesting and well carried out piece of work where magnet-electro nanoparticles are embedded within adhesives and through using pickup electro-magnetic coil feedback sensors, its possible to obtain a footprint of the state of health in terms of the bond.

As a lot of quality orientated work was carried out up front I have very little to add apart from a few minor corrections.

 

Line 44 ‘this type of bonds’ à please clear up grammar,

Figure 1, I don’t see any blue signatures change. If they are not used then should not be there.

Line 130   - was    For     à please revise?

 Line 150-151 the use an input frequency of 1.3 kHz (this is very high for electro-magnetic NDT), the skin equation would tell us your energising of the material is very much on the surface – perhaps even micrometers of depth. Is this what is intended? What depth is intended and is the depth important? Please elaborate on why this value is used ?  

 

Line 155 – the background signal – was this classed as noise or just the background signal ? Please clarify?

Line 182 used evaluate should be à used to evaluate

 

Section 3.2 and onwards à could you please discuss how such a system is calibrated, how such as system can be made repeatable and how did you understand material saturation occurred comparing with normal within limits measurements?

 

Figure 7 c – what state is this ? Please label also.

 

Finally, a lot of research discusses B-H curves but very little discuss how they calculate this and this is very important if one was to carry out your experiment for repeatability. Can you discuss this please?

 

I have no further input from my side, if you can get all the minor issues sorted above then this manuscript is ready for publication.

 

Good job!

 

 

 

Author Response

Please see the attachment

Author Response File: Author Response.pdf

Reviewer 3 Report

There are some amendments must be carried out in the manuscript as follows:

1. Page 1, Line 14: magneto-eclectic -> magneto-electric

2. Page 1, Line 35: PCM -> PMC

3. Page 2, Line 54: "...adhesive bonds cannot act to compartmentalize damage", unclear expression. The reviewer did not understand what the authors mentioned.

4. Page 4, line 130: "For" must be written in lowercase.

 

 

Author Response

Please see the attachment

Author Response File: Author Response.pdf

Reviewer 4 Report

The authors wrote the manuscript on “Multifunctional MENs doped adhesives: Bond quality evaluation and variations in magnetic signal with environmental exposure”. The results obtained by the authors are excellent.

However, the authors should clarify before publishing. Some major observations are:

1.             1. The author claim that, 60% decrease in the magnitude of the magnetic moment when MENs contained a polymer coating as compared to the free particles. Why? Add the mechanism with proper references.

2.              2. Similarly, the mechanism for fig. 3 (b) should be given.

3.      3. Why the author choose only 5% MENs to monitor their curing process? Confirmation of the magnetic signal is fine, however, is there any references based on this?

4.              4. Likewise, the explanation of fig. 8 should be added.

Author Response

Please see the attachment

Author Response File: Author Response.pdf

Round 2

Reviewer 4 Report

The authors wrote the manuscript on “Multifunctional MENs doped adhesives: Strengthening, bond quality evaluation, and variations in magnetic signal with environmental exposure”.

The authors have corrected the manuscript as per the reviewers comment. Therefore, it is recommended for publishing now.