How to understand 'climb and glide occur as a parallel which leads to the creep strain having a hyperbolic sine dependence on the applied stress'?

Dear researchers: I have difficulty in understand a technical phrase written in (Perrin and Hayhurst, 1996) Creep constitutive equations for a 0.5Cr0.5Mo0.25V ferritic steel in the temperature...

01 February 2015 871 12 View

How to understand this sentence written in Fracture at high temperatures by Riedel? about creep cavity shape?

'One of the reasons that cavity nucleation occurs at distinct nucleation sites in the grain boundaries, rather than homogenously in the crystal lattice, is that the specific cavity shape may...

31 December 2014 1,446 5 View

What is the difference among TEM, X ray and SEM when the research is trying to determine micro-structure?

31 December 2014 4,631 26 View

Does any research use plotdigitizer (a software) to obtain the existing published data for analysis and is this a proper method for research?

The methodology for my PhD project is based on data collected from the existing published paper, such as journal(figures), thesis and articles et al.. I was wondering if any researcher knows is...

31 December 2014 3,901 9 View

What does creep ductility really mean? For tension specimen(uni-axial) and notched bar(multi-axial) case?

Does anyone could help me with the definition and understanding about the creep ductility in uni-axial stress states and multi-axial stress states? Any help is appreciate!

09 October 2014 653 6 View

How could I know that I can pass the PhD viva and my research contribution are enough for a PhD degree?

05 June 2014 7,174 1 View

What is the difference between unconstrained diffusion and constrained diffusion for creep damage deformation mechanism consideration?

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03 April 2014 6,959 1 View

Does anyone know what methodology can be used to develop the creep damage constitutive equations?

Any suggestion is helpful!

31 December 2013 6,490 4 View

How do I obtain parameters for a new set of constitutive equations?

My project is to develop a new set of constitutive equations. However, I have no idea how to obtain the parameter for those functions.

31 December 2013 2,705 4 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

How to upload pdf of my articles published?

How to upload pdf of my articles published?

03 March 2021 2,183 3 View

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

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02 March 2021 932 1 View

APA 7th In-Text citations with two references with three authors with the same surname, but four different author?

I have an issue with APA 7th in-text citation. II have two papers where the first three authors are the same, and the fourth is different. I am using the Mendeley desktop app, and automatically it...

02 March 2021 790 3 View

Where can I find life cycle inventory or assessment of non woven materials?

Dear network, I am looking for the LCA or LCI or at least the energy balances of the non woven fabrics process for my master project, in specific for natural fibers, yet I have found...

02 March 2021 9,662 1 View