White-Light Interferometry




Non Contact Measurement by Laser




Hardness Test



The measurement method is based 

on the principle of Michelson interferometry,
where the optical configuration (image)
contains a light source with a coherence
length in the μm range.

English article: Polytec


Laser measurement offers the ability 

to assess the dimensional integrity
or profile of a part quickly without
touching the surface. 

English article: Third Dimension


It is the property of a metal,  which gives it the 

ability to resist  being permanently, deformed
(bent, broken, or have its shape changed),
when a load is applied. Thai article: 







Surface Finish Metrology




Roundness Metrology




3D Coordinate Measurement



The measurement of small scale features 

on surfaces, and is a branch of metrology.
Surface primary form, surface waviness
and surface roughness are the parameters
most commonly associated with the field

English article: Taylor Hobson


Out of roundness can produce a number 

of problems, vibration can have severe
affects on jet engines and in this case
dire consequences. The ability to
reduce or predict vibration is a necessity.

English article: Taylor Hobson


 The typical 3D CMM is composed 

of three axes, X, Y and Z. These axes are
orthogonal to each other in a typical
three-dimensional coordinate system.
Each axis has a scale system that indicates

English article: Wikipedia



Tensile&Compression Test


   Scanning Electron Microscopy    X-ray Computer Tomography Scanning  

It is the capacity of a material or structure to
withstand loads tending to elongate,
as opposed to compressive strength,
which withstands loads tending to reduce size.

Thai article:
Tensile - Dr. Sukangkana Lee
Compression - Dr. Sukangkana Lee


The electrons interact with atoms in the sample,
producing various signals that can be
detected and that contain information
about the sample's surface topography
and composition.

English article: Wikipedia


makes use of computer-processed
combinations of many X-ray images
taken from different angles to produce
cross-sectional (tomographic) images
(virtual 'slices')

English article:
1. Ralf B. Bergmann, Florian T.
Bessler and Walter Bauer
2. Martine Wevers



Quality Control


  Measurement System Analysis      

Quality control emphasizes testing of
products to uncover defects and
reporting to management who
make the decision to allow or deny
product release, whereas quality
assurance attempts to improve
and stabilize production to avoid,
or at least minimize, issues which
led to the defect(s) in the first place

Thai article: อ. เอกชัย บุญยาทิษฐาน

  It is a specially designed experiment 
that seeks to identify the components
of variation in the measurement.
Just as processes that produce
a product may vary, the process
of obtaining measurements and
data may have variation and produce

Thai article: อ. เอกชัย บุญยาทิษฐาน