for Windows

Void Analysis Option Module
The Void Analysis option module released! It can be added to ExFact VRthat visualize to 2D/3D image which data obtained from X-ray CT machine. (Sold Separately)
Extract internal defect or particles; analyze the output and display colors by size of datasuch as a casting product or the resin.

The word “ExFact” is coined as a brand name of oursoftware which presents our fine work of performing 3D
image processing. The meaning of “ExFact” holds “Examineand Express the Fact”

Function and Features● Support a variety of image data because it can be set to various detection conditions.
● Able to define various evaluation criteria due to setting detection conditions arbitrarily.
● Display 5 phases of a different void size so it is expressed as very intuitive● All detected objects will be out as numerical data format (CSV file).
● Of course, the analysis result is redistributable as VRVR movie.

The mascot ofExFact VR“Mikeo”

All voids have irregular shape convert
as sphere then classify diameter ofthe sphere into 5 phases and display indifferent colors.

IrregularshapeConvert
as sphere

Called Effective Diameter is a concept
commonly used in the industry ofmaterial science.The reason why notclassified and displayed as volume, it
is difficult to understand because thevolume is a cubed numerical value andalso tend to be biased towards to oneside.
Void can be extracted in various criteria.

It shows the percent of volume and quantity of voids.
User can set variety conditions of extracting voids make easy to compare

Display on the bottom shows charts, bars and numeric values

among data.Bar is longer, has more voids in the same color.

as footer easy to understand the result of detected voids.

Various Expressions
Switch the view of 5 different colors of voids freely.

Cut the volume thinly and show from back to front
sequentially.

If the voids expressed altogether,
it is difficult to understand.

Large voids (red) distributed in
the center and along the centeraxis.
small

7

10

14

20

large
pixels

Large voids (red) distributed in the center

By this sequential view of thin sliced volume,

and along the center axis.

easy to understand even complex shape of data.

Analysis example of die-cast product by X-ray CT
Analyzed and visualized X-ray CT image for comparison of between the casting products of compressed and normal.

Compressed casting

Porosity

The extracted copper

By compressing, the distribution of copper alloys
tends to be concentrated in specific places. It is

products of pressing
Display 3D

normalA lot of very small voids got together
observed by the differences in specific gravity
and structured in like coarse bush.
provide one another knowledge.
Display 3D
Display 2DT h e i m a g e i s c o n s t r u c t e d fo r u n d e r s t a n d i n g

・The solutions of avoiding voids are many

distribution of void’ s shape and features. It is abecause various types of voids in the productdepending on the casting conditions.

・Voids connected continuously, voids occur near characteristic of ExFact VR 2.0 that express sharp

・The solutions of avoiding voids are many surface.

rendering of contour even on semitransparent display.

because various types of voids in the product ・The flow of the mold effect, some voids have By high level of interpolation processing, it express
depending on the casting conditions.

The cases of analysis

certain direction of structuresmooth even less than one pixel (sub pixel).

Analyzed and visualized the image of the volume data of gray cast iron and spherical cast iron which data got from X-ray CT.
Not only the tool used for detecting voids but also it can be used as visualizing 3D structure and analyzing numerical values.

Gray cast iron・It is observed that graphite is gathered in center and from the center spread out like petal-shaped structure (flake graphite) in 3D space.
・It seems all scattered out but flake graphite (red) is connected somehow and occupied 98.8% of volume and left over small particles arescattered.

X-rays CTscanningsphereObjectThickness1.6mm

Flake graphite cast iron
(No line hardening treatment)

像の三次元表示
3DCT
displayof CT image

Spherical cast iron

片状黒鉛を三次元的に抽出
Extract
the flake graphite
three dimensionally

抽出した黒鉛を大きさ別に色分け表示
Display
by size of extracted graphite

・Exclude any chunk of spherical cast iron which protruded from the view area even small part for getting precise data of analyzing shape ofspherical cast iron.

X-rays CTscanningsphere

Object2 × 2mm

3D display of CT image

Extract the spherical castiron three dimensionally

Color-coded by the effective diameter: The rounding rate that calculated fromClassified as the converted diameter of X-rays CT image of the spherical cast ironthe sphere that each particle extracted
from spherical cast ironSpecification and release time may change without notice.Company and product name are registration of trademark.