Reg _ High acoustic emission frequency range?

Vinooth Rajendran @Vinooth-Rajendran

14 June 2022 0 4K Report

Hello All

The acoustic emission frequency range is 20 kHz to 1 MHz from deformation, and crack.

Does anyone know the source of acoustic emission above 1 MHz? If yes, please share that source.

Regards

Vinooth.

Badges
Science topic

More Vinooth Rajendran's questions See All

How to determine the position of occupancy of the dopant? - whether it is doped in tetrahedral or octahedral site?

Suppose a material "A" has both tetrahedral and octahedral sites and we are doping another material "B" - usually an ion into it. How can we detect if the dopant has occupied the octahedral site...

17 July 2024 4,299 4 View

In Entity relationship (ER) diagram, How to create more than path from one entity to another entity with meaningful connection?

ER (Entity Relationship) Diagram helps to find the path path between one entity to another entity, or one attribute to another attribute. But most of the ER Diagram has only one direction to...

26 May 2024 8,663 0 View

Does anyone know how to do genome assembly for bacteria? Please share it if there is any online tutorial?

I would like to do genome assembly for the bacteria isolate from the environment. Can any provide me the information or any tutorial? It would be helpful! thanks!

18 April 2024 1,894 12 View

How to convert text into SQL Semantically with the consideration of tuples?

Most of the AI2SQl automatically generates SQL Query based on the training data. I want to generate a Query with the consideration of the Values present inside the table. Suppose a value called...

08 April 2024 5,731 3 View

Why metal nitrates are preferred in MOF synthesis over other metal forms?

In a study on MOF catalysis, its has been mentioned that the nitrate form of the metal precursor gives good catalytic activity over other metal forms (like chloride, acetate or sulfate). Does the...

12 February 2024 219 3 View

How to retrieve FTIR absorbance spectra from an ATR spectra?

I am working on FTIR analysis of my samples, however due to an error I collected ATR spectra instead of absorbance. Is it possible to retrieve FTIR absorbance data from ATR?

25 January 2024 3,168 2 View

Can anyone tell me how to calculate absorption coefficient of ytterbium doped double clad fiber at 1064nm?

I have 20/400um Yb-double clad fiber. I would like to know absorption at 1064nm. Any answers will be helpful.

24 December 2023 2,932 0 View

Unexpected peak in mass spec positive ion mode, reason?

Recently we are getting strange peak at 8-9 min in LCMS. The peak showing up 50-60% of ACN in the mass spec positive ion mode (please see the attachments). However, the peak was invisible in PDA...

05 September 2023 8,028 0 View

Is there any python code to find detour distance between a pair of vertices in an undirected graph?

To find the detour distance (longest simple path) between every pair of vertices in a molecular graph .

13 July 2023 9,587 1 View

What's the difference between strain energy and elastic energy?

"Elastic Hysteresis is the difference between the strain energy required to generate a given stress in a material, and the material's elastic energy at that stress". Here strain energy and...

26 May 2023 7,483 1 View

How are iso-frequency contours plotted?

Let's say we have a standard, regular hexagonal honeycomb with a 3-arm primitive unit cell (something like the figure attached; the figure is only representative and not drawn to scale). The...

07 August 2024 1,937 1 View

Why results of ROS flurescence are negative as there was no bacteria within?

Hello. I am working on ROS production of two systems: system A is cerium oxide and hydrogen peroxide, system B is cerium oxide nanoparticle, hydrogen peroxide and potassium bromide. I did some...

04 August 2024 5,974 3 View

Does it exist some special technique for cutting ceramic membranes for Cross-sectional FESEM images?

Does it exist some special technique for cutting ceramic membranes for Cross-sectional FESEM or SEM images?

25 July 2024 5,482 2 View

What is the future scope of acoustic emission?

17 July 2024 1,510 1 View

Why my simulation results are showing too much deformation compared to experimental result?

I performed fea on tensile dog bone specimen using ANSYS static structural and also tried using ANSYS explicit dynamics. In experimental result the load is 500 N and deformation is 0.6 mm...

13 July 2024 3,631 4 View

What is the correct way of calculating CO2 from private transportation and what is correct emission factor?

Hi, I have a question about emission factors for passenger cars based on the EMEP/EEA air pollutant emission inventory guidebook 2023, in the link that I used to calculate the CO2 emission per...

04 July 2024 1,766 2 View

How can we calculate the CO2eq from indirect emission of organic fertilizer production?

Do we have to use kg N or kg organic fertilizer multiply by emission factor of organic fertilizer production?

03 July 2024 7,701 3 View

EWG and EDG effect on ISC and fluorescence?

Could anyone suggest me what is effect of electron donating and withdrawing group on fluorecence emission or intersystem crosssing. Thank you

22 June 2024 2,656 2 View

Inquiry Regarding Higher-Order Shear Deformation Theory (HSDT) and First-Order Shear Deformation Theory (FSDT)?

Dear All, I am writing to solicit your expertise regarding the application of Higher-Order Shear Deformation Theory (HSDT) and First-Order Shear Deformation Theory (FSDT) for structural...

22 June 2024 7,751 5 View

What are the economic challenges and opportunities associated with transitioning to a low-carbon economy?

low carbon emission

11 June 2024 4,947 3 View