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100

What is additive manufacturing?






What is additive manufacturing?




Additive manufacturing (AM) is defined by the ASTM society as “a process of joining materials to make objects from 3D model data, usually layer upon layer, as opposed to subtractive manufacturing methodologies”


100

 What is system drives/mechanical drives

 Mechanical drive systems are widely used in mechatronic applications in order to convert from rotational motion to translational motion and in order to match speed and torque. Seven examples of such mechanical drive systems are given in this technical note.

100

Types of polymers used in additive manufacturing

The following polymers can be used:

  • ABS (Acrylonitrile butadiene styrene)
  • PLA (polylactide), including soft PLA.
  • PC (polycarbonate)
  • Polyamide (Nylon)
  • Nylon 12 (Tensile strength 45 Mpa)
  • Glass filled nylon (12.48 Mpa)
  • Epoxy resin.
  • Wax.
100

What is known as nanomaterials?


Nanomaterials are usually considered to be materials with at least one external dimension that measures 100 nanometres or less or with internal structures measuring 100 nm or less. They may be in the form of particles, tubes, rods or fibres


100

What is NC & CNC  

NC machine is the machine that is controlled by a set of instructions in the form of numbers, letters, and symbols called a program. CNC machine is used to control motions of the workpiece and tool with a computer program written in alphanumeric data

200

What are the 7 categories of additive manufacturing?





Types of Additive Manufacturing Processes
  • Binder Jetting. Binder jetting, also known as material jetting or inkjet powder printing, is among the most common additive manufacturing types. ...
  • Directed Energy Deposition (DED) ...
  • Material Extrusion. ...
  • Powder Bed Fusion (PBF) ...
  • Sheet Lamination. ...
  • Vat Polymerization. ...
  • Material Jetting.
200

What is Pneumatic and hydraulics 


Pneumatic and hydraulic


Pneumatics use an easily compressible gas such as air or other sorts of suitable pure gas—while hydraulics uses relatively incompressible liquid media such as hydraulic or mineral oil, ethylene glycol, water, or high temperature fire-resistant fluids.


200

What is this polymer?







A polymer is any of a class of natural or synthetic substances composed of very large molecules, called macromolecules, which are multiples of simpler chemical units called monomers. Polymers make up many of the materials in living organisms and are the basis of many minerals and man-made materials


200

What is wet chemical method for synthesis of nanoparticles?




Wet chemical synthesis is a widely used technique for growing ZnO NP solutions, in which zinc nitrate (Zn(NO3)2) and sodium hydroxide (NaOH) are generally used as the precursor reactants and deionized water as the reactive solvent.


200

What do you mean by CNC part programming?






CNC part programming involves a series of coded instructions that are required to produce a part. The program controls the machine tool movements and controls auxiliary functions including spindle, coolant, and rotation. The instructions may include numbers, letters, and symbols arranged in functional format blocks



300

Is additive manufacturing the same as 3D printing?





Between the terms 3D printing and additive manufacturing, there is no difference. 3D printing and additive manufacturing are synonyms for the same process. Both terms reference the process of building parts by joining material layer by layer from a CAD file
300

What is hydraulic actuator?



A hydraulic actuator consists of a cylinder or fluid motor that uses hydraulic power to facilitate mechanical operation. The mechanical motion gives an output in terms of linear, rotary or oscillatory motion


300

What is metallurgy powder?


Powder metallurgy is the process of blending fine powdered materials, pressing them into a desired shape or form (compacting), and then heating the compressed material in a controlled atmosphere to bond the material (sintering)



300

What is Gas Phase synthesis of Nano-materials

Nanoparticles can be prepared by gas-phase synthesis. Cooling of a saturated dense gas under specific conditions induces nucleation and growth of nanoparticles as raindrops appear in a cloud 



300

Sample turning program


400

What stereolithography means?





Stereolithography (SLA or SL; also known as stereolithography apparatus, optical fabrication, photo-solidification, or resin printing) is a form of 3D printing technology used for creating models, prototypes, patterns, and production parts in a layer by layer fashion using photochemical processes by which light causes ...


400

Which are two types of hydraulic actuators?


There are two different types of actuators in a hydraulic system: rotary actuators (or hydraulic motors) and linear actuators (or cylinders)


400

The four basic steps to the powder metallurgy process are powder preparation, mixing and blending, compacting, and sintering. These steps have been used over the centuries to produce a variety of products


400

What is SEM microscope used for?




The scanning electron microscope (SEM), in which a beam of electrons is scanned over the surface of a solid object, is used to build up an image of the details of the surface structure


400

Sample milling program


500

What are the benefits of additive manufacturing?





Top Ten Advantages of Additive Manufacturing
  • The Cost Of Entry Continues to Fall. ...
  • You'll Save on Material Waste and Energy. ...
  • Prototyping Costs Much Less. ...
  • Small Production Runs Often Prove Faster and Less Expensive. ...
  • You Don't Need as Much On-Hand Inventory. ...
  • It's Easier to Recreate and Optimize Legacy Parts.


500

What is the working principle of hydraulic actuator?




Hydraulic actuators use liquid pressure rather than instrument air pressure to apply force on the diaphragm to move the valve actuator and then to position valve stem. Nearly all hydraulic actuator designs use a piston rather than a diaphragm to convert fluid pressure into mechanical force.


500

Wet spinning method


500

The main difference between SEM and TEM is that SEM creates an image by detecting reflected or knocked-off electrons, while TEM uses transmitted electrons (electrons that are passing through the sample) to create an image


The main difference between SEM and TEM is that SEM creates an image by detecting reflected or knocked-off electrons, while TEM uses transmitted electrons (electrons that are passing through the sample) to create an image


500

Sample drilling program