What is the difference between macro and micro examination?
Macro-study is performed with naked eye or with low magnification to study the surface defects of an material, whereas microstructural study is to identify the type of structure, grain size, distribution of particles, grain boundaries etc.
What is a macro etch test?
A test in which a specimen is prepared with a fine finish, etched, and examined under low magnification.
What are the steps to check macros?
Right-click the macro in the Navigation Pane, and then click Design View. On the Design tab, in the Tools group, click Single Step. Click Run. If the macro is a new or edited macro, you will be prompted to save the macro before you can run it.
What is a macro welding?
Macro Weld Examinations are performed on a polished and etched cross-section of a welded material. Slag, porosity, lack of weld penetration, lack of sidewall fusion and poor weld profile are among the features observed in such examinations.
What is macro and microstructure?
As nouns the difference between macrostructure and microstructure. is that macrostructure is the gross structure of a material or tissue as visible to the unaided eye or at very low levels of magnification while microstructure is the fine structure of a material or tissue as revealed by microscopy.
Who invented metallography?
Metallography, as we know it today, owes much to the contribution of the 19th century scientist Henry Clifton Sorby. His pioneering work with modern manufactured iron and steel in Sheffield (UK) highlighted this intimate bond between the microstructure and macroscopic properties.
Why is it important to perform macro etching examination?
The macro structure is evaluated with the naked eye or under low (up to 20x) magnification. This testing is an excellent method in determining the soundness of weld metal by revealing the metallurgical structure produced by the weld such as lack of penetration, lack of fusion, cracking and inclusions.
Where are macros saved?
Personal Macro workbook is always stored in the XLSTART folder. Excel always looks in this folder whenever it launches. So any file stored here gets loaded as soon as Excel starts.
Why do we use macros?
A macro is used to automate a task that you perform repeatedly or on a regular basis. It is a series of commands and actions that can be stored and run whenever you need to perform the task. Tasks performed by macros are typically repetitive in nature and can provide significant time savings.
What is a macro test?
– Ensures correct heat treatment is employed – Detects unwanted phases and inclusions – Ensures castings are free from cracks or voids and segregations – Identifies where excessive grain growth has occurred – Determines fracture modes and corrosion damage in failure investigations
What is macro screening?
Macro screening. The Macro Screening is a very important step positioned between the project idea generation and the final decision about the most promising business idea. Macro Screening helps to do a first selection; it’s like pouring all these ideas into a funnel.
What is macro examination?
Macro-examination, examination with the naked eye or at a low magnification, is a useful technique for the inspection of fracture surfaces, and for determining some of the characteristics of metal structures.
Can I use macro program?
They can also be used to replay sequences that are long or difficult to run. You can assign a macro recorded in Microsoft Mouse and Keyboard Center to a key or a mouse button. You can also use the Macro Repeat feature to play and repeat a macro continuously, and then stop it at any time.