How accurate is the shear modulus measured using PROCEQ DPC transducer of 40kHZ frequency on 100mm concrete cube specimen?

It is required to evaluate shear modulus of concrete cube specimen of 100mm size. Since the diameter of DPC transducer is around 84mm, I would like to know whether it can give reliable shear wave...

02 February 2021 1,052 3 View

How to solve this definite integral???

Please help me to solve the integral: $$\int_0^{-2w}\phi^{-k-\frac{1}{2}}\frac{{_2F_1(k-\frac{1}{2},k,k+\frac{1}{2};1-\frac{k-\frac{3}{2}}{\phi})}}{\sqrt{-\phi-2\omega}}$$ (see the attachment) I...

17 October 2016 5,884 9 View

What are the methods to fragment genomic bacterial DNA to get ~kb size fragments?

What are the conventional methods to fragment bacterial DNA to get ~1-10 kb size fragments? Is there any review paper or other publications out there if it's a very broad set of methods? Any...

25 February 2016 8,998 2 View

Doubts regarding PVDF material and poling procedure.?

I request you for help to clear these doubts 1 I heard that trfe and tfe adding to pvdf will increase the cristalinity , did HFP will increase the cristalinity if we add this to pvdf,, 2 in poling...

18 April 2015 7,094 1 View

How can I define amplitude and interaction in dynamic explicit analysis for sheet metal forming in ABAQUS?

07 January 2015 1,077 3 View

How can we find out the elasticity matrix for practically any material?

04 January 2015 9,724 6 View

How can one carry out a dynamic explicit analysis in ABAQUS?

While carrying out a dynamic explicit analysis in ABAQUS for a metal forming process, I encountered a problem while defining Boundary conditions. The following message popped up: "In an explicit...

27 November 2014 6,490 5 View

Is there any specific method to test the multi alternative hypotheses (either in classical or in fuzzy)?

Consider 2 or more groups to be compared. So is there any specific classical or fuzzy methods are there for comparing them to the population parameter? If so kindly provide me the name of the methods.

20 July 2014 3,313 1 View

Is there a particular reason DPV is preferred over EIS or are there any cons or advantages of one over the other?

I have seen hybridization assays (detecting hybridization events) using both EIS (electrochemical impedance spectroscopy) and DPV (differential pulse voltammetry). I have seen less of EIS being...

04 August 2013 739 4 View

How to reduce noise during differential pulse voltammetry? Effect of working electrode area?

I am trying to run DPVs using a GCE/glassy carbon working electrode on Ruthenium in 0.2 M acetate buffer (Pt CE & Ag/Agcl RE). When I try using a lower surface area electrode I see that noise...

06 June 2013 6,409 19 View

In frequency domain alpha band(8-16hz), beta band(16-32hz), gamma band(32-64hz), sub-band(64-128hz) are same as LL,LH,HL,HH in wavelet decomposition?

I am working on single trial motor imagery data i.e. EEG data. I am following a paper which has a dataset from BCI challenge IV (dataset 2b). After removing noise and extracting all the data from...

23 February 2021 5,503 1 View

Suppose we have a banana seller cart consisting of 4 wheels, weighing about 300 kg. How much torque motors are needed to pull of push it electrically?

I am thinking of electrifying the street food carts while harvesting energy using solar panels on top.

22 February 2021 4,323 3 View

Can you please suggest me how to convert EDF file into Mat file for EEG datasets?

Hi sir, 1.can you please suggest to me how to convert the EDF (European Data format) file into a Mat(Matlab) file for EEG datasets?. 2. Also suggest some publicly available EEG Motor Imagery...

15 February 2021 7,620 1 View

Is Genetic Algorithm usage for Motor Conception FEA optimization a good choice?

Hi RG community, Like the title shows ,i was wondering if choosing the GA for this kind of Optimizaiton is a good choice? For example we have a population of 100 (for 7-8 Optimization Variables),...

14 February 2021 1,160 7 View

How to interface ANSYS Maxwell and Matlab?

Dear All, I am working on electric motor design in Ansys Maxwell. I have written optimization code in MATLAB. I want to run this code in ANSYS MAXWELL and generate FEA results. Does anyone know...

10 February 2021 1,279 1 View

How can I prevent my switching power supply from sudden voltage increases ?

Hi Everybody, I'm currently using a 3kW AC/DC converter which gave 48VDC output(Switch mode power supply). The device is capable to deliver up to 62.5A current to the load. My application is a...

08 February 2021 7,642 4 View

Can I project all raw motor imagery EEG data onto two spatial filters developed from training data?

Greetings RG community, I have been working on a pipeline for the classification of EEG motor imagery signals. This is currently being done on the Giga Science MI dataset with 52 subjects, using...

28 January 2021 6,947 2 View

What percentage torque ripple exists in electrical motors used in electric vehicles ?

I am trying to understand the significance/percentage of torque ripples that exist in electrical motors (under operating conditions) that are used in commercial electric vehicles. If someone could...

15 January 2021 5,691 3 View

Gear reduction for back-drivability of a motor?

Hi everyone, Does anyone know up to what reduction ratio of gear does a motor remain back-drivable? I want my robot to have safe interactions with the environment and other humans. Can you give a...

26 December 2020 7,142 3 View

How do I calculate the torque required for linear motion?

23 December 2020 5,064 3 View