Summer Vacation: in Ibusuki, Japan
That summer, Taki-chan returned to her hometown by herself.
7 stories, 55pages, B/W.
That summer, Taki-chan returned to her hometown by herself.
7 stories, 55pages, B/W.
Short lyrical comics hitotu: Haiku Manga : Starting in 1997. Published one book every year. "hitotu" means "one" or "a". Unlike the commercial cartoons that tend to pursue entertainment, this book pursues honest feelings of artists. All comics are chosen from the public.
The stage of this story is 400 years from now.
The world in 400 years' time is described as a eco-friendly and comfortable place to live in.
And I do hope so.
In 400 years' time Tosuka10, an artifical intelligence computer, recovers from a lost civilization of the 21th century.
Ruu and Giru meet many remains in the 21st century through Tosuka10, and they reach out to each other and grow.
This book has 170 pages, 7 stories. Black and white.
It's written in 1996-1997, and added one story in 2000.
Thread stripping (failure of the female thread) was historically a nightmare to calculate. The 2021 guideline introduces a completely revised method for determining the "loadable length of engagement."
). Account for this loss to ensure the joint remains secure over its lifetime. 4. Key Updates in the VDI 2230:2021 Edition
For cyclic loading, check that the alternating stress amplitude ( σasigma sub a ) is below the endurance limit of the bolt thread.
Always verify that the software license specifies "VDI 2230:2021" – many legacy versions are still stuck on 2014. vdi 2230 2021
The process begins with an estimate. Using in the standard, you can select a recommended nominal bolt diameter (d) based on the required operating load (axial force, shear force), load type (static or dynamic), and the precision of the planned tightening method. This prevents starting the detailed calculation with a bolt that is grossly oversized or undersized.
To create a calculation or software feature based on the VDI 2230 (2021) standard, you should focus on the 13-step systematic calculation procedure
The 2021 revision expands the database for material properties. As engineering moves toward lightweight materials like aluminum and magnesium alloys, and high-strength steels, the standard has updated its temperature correction factors. Engineers can now more accurately predict how a joint will behave under thermal stress, specifically regarding the reduction of yield strength and the relaxation of preload at varying temperatures. Thread stripping (failure of the female thread) was
means more uncertainty, requiring a larger design safety margin. Step 3: Estimate the minimum required clamping force ( FKerfcap F sub cap K e r f end-sub
The long‑term study of 2.5 MW wind turbine tower bolts validated VDI 2230 calculations against ultrasonic measurement data spanning 18 months of field operation, confirming the standard’s predictions for actual service conditions.
): Calculate the minimum force needed to keep the joint tight, compensating for external axial loads, thermal loss, and embedding (surface roughness reduction). Determine Tightening Factor ( αAalpha sub cap A The process begins with an estimate
There is no single "proper piece" — instead, the guideline is divided into (both updated in 2021):
Originally developed for the automotive industry, it is now a staple in:
Let me show you the life in Kaka Island.
English version was reliesed at 03.2022.
This book has 79 pages, 10 stories.
Black and white.
It's written from 2002 to 2007 added in 2022.
This was selected Future Lifestyles Multimedia Contest 2021.
A small self-sufficient area is called "Island district".
The world has consisted of these Island districts which are independent and cooperative.
These are the stories in Kaka Island in the Far East.
Let me show you some unique vehicles in Kaka Island.
English version was reliesed at 07.2022.
This book has 73 pages, 9 stories.
Black and white.
It's written from 2007 to 2011 added in 2022.
This was selected Future Lifestyles Multimedia Contest 2021.
365 pictures, 365 women, 12.2012.- 12.2013, at Osaka Japan. ink, kent paper
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