In Situ Rubber-Wheel Contact on Road Surface Using Ultraviolet-Induced Fluorescence Method
Round 1
Reviewer 1 Report
Dear authors!
The improved manuscript version is much better. However, still some improvements can be made. Below are some comments.
- Authors should take into account more well known theoretical approaches. There are physics based multiscale rubber-friction theories developed by B. Persson and M. Klüppel. Would be great to treat theoretical approaches and discuss their relevance to the guided experiments.
- The text still needs language corrections. E.g. in an introduction section (
25 The study of contact mechanics between tire and road surface is one of tribological application sciences in automobile.
28 grip performance, noise, rolling resistance, wear, and energy loss, which correlates with each other). Those sentences meaning is not clearly outlined. - 40 contact conditions are well understood. Apart from data on the contact area in various conditions being insufficient, its mechanisms are not well understood. It is essential to observe and analyze the contact between tire and road surface in various conditions to understand its mechanisms. What "mechanism" is meant?
- Is the research more concentrated to the "true contact area" or "apparent contact area research"? If the surface substrate friction is not measured, the "contact area" nature is not known. Currently, is seems that the dynamic of the apparent contact area dependence from the load (static case) and from load/speed (motion mode) is investigated.
- Missing reference in a section starting from row 65 (A real contact area experiment was conducted to gain a better understanding of tire rubber....)
-
Units are not always correctly presented. E.g. in the row 113 (The green-dichroic-filter (passing wavelength between 505nm and 575nm) was placed on the top of..)
-
Space should be between value and unit!
- Authors sometimes use Fig and in some places Figure. This should be unified.
- Figures doesn’t contain the uncertainty bars. Is there reason for that?
Author Response
Dear reviewer,
The article has been corrected based on your comments.
Regarding to your comment no.6 about "units are not always correctly presented", we usually use nm (nanometers) for the unit of wavelength. please inform me which parts are in correct. Or I might misunderstand what you mean.
And about the last comment about error bars, is because this is one case study. that way we did not make uncertainty bars.
hopefully it can answer you comment.
Best regards,
Jhonni Rahman
Author Response File: 
Author Response.docx
Reviewer 2 Report
The manuscript is interesting, it is well structured, abstract, introduction, conclusions and bibliography are correct.
Just some appreciations regarding the methodology and results.
Apparently, the surface of the used tire is smooth, but frequently the tread patterns suitable for wet terrain aren't smooth. How affects the contact between rubber wheel and road surface for this kind of patterns. Do you think that the results would be the same?
I n other way, the manuscript will improve with more deeper explanation about the logarithmic trendline, what means the different slopes, mainly in static conditions.
Author Response
Dear reviewer.
Thank you for your comments.
Regarding to your comment about "rubber with tread pattern". Even though we had yet tested using tread rubber, I think the result will be different but has same tendency. Because specially in high speed, the tread rubber contributes largely in discharging out water between the rubber and the road. therefore, the contact area of tread rubber should be larger than smooth rubber.
About your other comment. We had corrected the explanation on static conditions by comparing it with theoretical approach of BNJ. Persson.
Best regard,
Jhonni Rahman.
Author Response File: Author Response.docx
Round 2
Reviewer 2 Report
The authors has answered all the comments and requirements. I accept in present form.
This manuscript is a resubmission of an earlier submission. The following is a list of the peer review reports and author responses from that submission.
Round 1
Reviewer 1 Report
Article text needs a professional language correction prior review.
Reviewer 2 Report
The paper considers how a small size tire interacts with a glass plate at low loads and speeds. It concentrate on contact width. I would have liked to see how the method can be developed to assess real sized tires and textured road surfaces and provide data of real application rather than this limited type of fundamental study.
