Can anyone suggest me an economic laser vibrometer which can measure the accurate mode shapes of the simple structure?

I wish to buy a economic (cost effective) laser vibrometer to measure the precise mode shapes of the structure. Can anyone suggest me other than polytec laser vibrometer.

10 November 2017 7,309 4 View

How to solve fourth order ODE equations numerically?

06 July 2017 8,461 1 View

How to simulate the moving heat source on CFRP Laminates in ABAQUS?

07 August 2016 1,582 0 View

What is the expression for torsion vibration of thin plates?

I want to calculate shear modulus 'G' through the vibration method. Once I get natural frequency corresponding to torsional mode then I'll use it for the expression in order to find G.

09 October 2014 3,954 7 View

How does one give bidirectional woven ply orientation in ABAQUS?

07 August 2014 2,145 4 View

Is there any authenticate website to know about Impact factors of the engineering journals?

07 August 2014 1,233 2 View

How can I check the closeness of normal distribution?

I have data points that I want to check the closeness of normal distribution. So I can use ''hist'' function in MATLAB, but I need a coefficient which tells how closeness to the normal...

03 April 2014 1,445 13 View

Can I use six sigma method as threshold value for damage identification problems?

Is there any standard practices are available to use threshold value in the damage identification problems. If anything is there, kindly let me know.

02 March 2014 9,208 5 View

How do you avoid edge effects in wavelet transform?

I have a signal I would like to pass through the WT. I am very much interested in detecting the singularity in the signal but I found peaks at the edge.

02 March 2014 8,119 3 View

How to get reliable natural frequency when I repeat the vibration test for several times?

Basically, I am trying to detect damage on beam structures for a cantilever support. Suppose, I am measuring first natural frequencies from the experiments at several times of undamaged state of...

01 February 2014 2,094 6 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

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 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

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

How to code open-ended questions in SPSS?

Hello all, In SPSS I am going to code 2 open-ended questions. I have already read all the answers and I made a list of the most important categories to which I can code the answers. This question...

02 March 2021 1,757 4 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View