Study on the Wear Performance and Wear Prediction of Leaf Spring Calipers under Lubricating Medium Conditions
Round 1
Reviewer 1 Report
Comments and Suggestions for AuthorsThe work is well documented and presented. The work can be accepted with revisions:
i. please include the composition of the leaf spring and pipe sample particulaly the elements%
ii. authors have used three different types of oils. please include the physico-chemical properties of the oils and relate then with the results.
iii. how did viscosity affect the results?
iv. A separate section on Lubrication Mechanism should be added.
v. Determine the type of lubrication phase and the lubrication mechanism.
vi. you have indicated adhesion mechanism, can you please state the reason why adhesion has occured even in the presence of the lubricant.
vii. indicate the number of times the experiments were conducted.
Author Response
Please see the attachment.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Comments and Suggestions for AuthorsThe manuscript „Study on the Wear Performance and Wear Prediction of Leaf Spring Calipers Under Lubricating Medium Conditions“ is a research work providing information on spring callipers‘ arm wear. The tribo test provided in the manuscript is unique and provides interesting data. Unfortunately, there are many drawbacks which must be improved before further consideration. Here is a list of a few of the many.
1. The introduction should show the present state of the art in the field. The references are old enough, which shows that the topic may not be new.
2. Lines 54-57. The same sentences.
3. Line 102. What does the term „speed time of 50h“ mean?
4. The tribo test methodology is already explained in the introduction.
5. The aim and the purpose of the study are not clear. Please provide them at the end of the introduction.
6. How are the load and sliding speed related to actual conditions? In the results section, the authors further explain the methodology: „The result was obtained after applying a pressure of 5N and a test speed of 1r/s for 100 revolutions.“ Figures 5 and 6. Please summarise the test methodology in one section.
7. What dimensions does the spring specimen have?
8. Line 199. „The test is in Fig. 4.“ Please rephrase.
9. The reason for explanations in Lines 222 -240 is unclear. Please summarize the explanation.
10. Figure 8 does not show roughness. Maybe it is a profile height? In what place was this measurement taken?
11. What is „section K“? It is better to summarise Figures 8 and 9.
12. Why are COF variations in Figures 4, 11, 15, and 19 limited to 100 s when the test time is 50 hours?
13. The paper lacks consistency. Line 166 „leaf spring specimen is G61500“. However, in Line 291, „50CrVA leaf spring specimen“.
14. Section 3.2. title „3.2. Analysis of the Influence of Operating Medium on Wear Accuracy“. Why accuracy? The wear and COF were measured in the lab conditions. The fitting equations are not validated in actual applications.
15. The leaf spring sample in Figures 12, 16, and 20 seems to have wear from one side. Is that an alignment problem?
16. What are the MV and PV in Figure 25?
17. Table 3. Running distance (m) 21000. However, Line 181: „the total mileage of the run was 16,956 m.“
18. Conclusions are general. They do not summarise findings.
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Round 2
Reviewer 2 Report
Comments and Suggestions for AuthorsThe manuscript was significantly improved. However, some drawbacks still exist.
The purpose of giving tribo-test methodology in the introduction is not clear.
The manuscript contains many sentences that must be corrected and clarified. For instance, Line 190 “Leaf spring length 15mm width 3.9mm height 1mm”; Line 650 “<…> its lubricant film in the adhesion between the two metals is better, the formation of the lubricant film is thicker and is not easy to destroy”. Please make sure that such sentences are corrected.
Please summarise your findings throughout the manuscript to be more consistent.
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
