File:NLC404-01J002447-59585 航空委員會航空研究所技術報告,又名,航空委員會航空研究院研究報告 1946年28期.pdf

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search
Go to page
next page →
next page →
next page →

Original file ‎(1,550 × 2,239 pixels, file size: 1.99 MB, MIME type: application/pdf, 68 pages)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

[edit]
航空委員會航空研究所技術報告,又名,航空委員會航空研究院研究報告   (Wikidata search (Cirrus search) Wikidata query (SPARQL)  Create new Wikidata item based on this file)
Author
航空委員會航空研究所
image of artwork listed in title parameter on this page
Title
航空委員會航空研究所技術報告,又名,航空委員會航空研究院研究報告
Volume 1946年28期
Publisher
航空委員會航空研究院
Description

出版周期不詳

一.引言
二.試材之來源
三.試材採集之方法
四.試材之處理
五.力學性質及其試驗方法
（一）靜曲試驗
1.比例限度應力
2.破壞係數
3.彈性係數
4.最大荷重之工作
（二）韌性試驗
（三）簡卡氏抗凹硬度試驗
（四）順紋剪力試驗
（五）順紋壓縮試驗
1.比例限度應力
2.最大抗壓強度
（六）橫紋壓縮試驗
六.物理性質
（一）含水量
（二）比重
（三）收縮
（四）生長率
七.影響木材力學性質之因子
（一）比重與力學性質之關係
（二）生長率與力學性質之關係
（三）含水量與力學性質之關係
（四）缺點
1.節
2.斜紋
3.被壓木
4.壓傷
5.腐朽與邊材變色
6.蟲害
7.脂囊
8.乾裂與輪裂
（五）木材性質之變異性
附錄一.航空木材設計值
附錄二.計算公式
附表
第1表a各種木材之力學性質及相關性質（一）種名，採集地點，試驗樹株數及試樣數
第1表b各種木材之力學性質及相關性質（二）重要物理性質
第1表c各種木材之力學性質及相關性質（三）力學性質，主要分布區域及主要用途
第2表減少（或增加）木材含水量1%時各種強度增加（或減少）之百分率
第4表各種木材在15%含水量時之飛機設計用強度值
插圖
第1圖木筒鋸取試條劃線法
第2圖國產各樹種之破壞係數與基本比重之關係
第3圖國產各樹種之順紋抗壓強度與基本比重之關係
第4圖各樹種之爐干比重與生長率之關係曲線
第5圖麥吊杉基本比重變異圖
第6圖麥吊杉靜曲試驗破壞係數之次數分布
第7圖麥吊杉靜曲試驗堅性係數之次數分布

Language Chinese
Publication date 1940~[?]
Source
institution QS:P195,Q732353
(民國時期文獻 民國期刊)
館藏信息
InfoField
447.505

Licensing

[edit]
This image is in the public domain because it is a mere mechanical scan or photocopy of a public domain original, or – from the available evidence – is so similar to such a scan or photocopy that no copyright protection can be expected to arise. The original itself is in the public domain for the following reason:
Public domain
This image is now in the public domain in China because its term of copyright has expired.

According to copyright laws of the People's Republic of China (with legal jurisdiction in the mainland only, excluding Hong Kong and Macao), amended November 11, 2020, Works of legal persons or organizations without legal personality, or service works, or audiovisual works, enter the public domain 50 years after they were first published, or if unpublished 50 years from creation. For photography works of natural persons whose copyright protection period expires before June 1, 2021 belong to the public domain. All other works of natural persons enter the public domain 50 years after the death of the creator.
According to copyright laws of Republic of China (currently with jurisdiction in Taiwan, Penghu, Kinmen, Matsu, etc.), all photographs and cinematographic works, and all works whose copyright holder is a juristic person, enter the public domain 50 years after they were first published, or if unpublished 50 years from creation, and all other applicable works enter the public domain 50 years after the death of the creator.

Important note: Works of foreign (non-U.S.) origin must be out of copyright or freely licensed in both their home country and the United States in order to be accepted on Commons. Works of Chinese origin that have entered the public domain in the U.S. due to certain circumstances (such as publication in noncompliance with U.S. copyright formalities) may have had their U.S. copyright restored under the Uruguay Round Agreements Act (URAA) if the work was under copyright in its country of origin on the date that the URAA took effect in that country. (For the People's Republic of China, the URAA took effect on January 1, 1996. For the Republic of China (ROC), the URAA took effect on January 1, 2002.[1])
To uploader: Please provide where the image was first published and who created it or held its copyright.
You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
 Note that this work might not be in the public domain in countries that do not apply the rule of the shorter term and have copyright terms longer than life of the author plus 50 years. In particular, Mexico is 100 years, Jamaica is 95 years, Colombia is 80 years, Guatemala and Samoa are 75 years, Switzerland and the United States are 70 years, and Venezuela is 60 years.

čeština ∙ Deutsch ∙ English ∙ português ∙ română ∙ slovenščina ∙ Tagalog ∙ Tiếng Việt ∙ македонски ∙ русский ∙ മലയാളം ∙ ไทย ∙ 한국어 ∙ 日本語 ∙ 简体中文‎ ∙ 繁體中文 ∙ +/−


This tag is designed for use where there may be a need to assert that any enhancements (eg brightness, contrast, colour-matching, sharpening) are in themselves insufficiently creative to generate a new copyright. It can be used where it is unknown whether any enhancements have been made, as well as when the enhancements are clear but insufficient. For known raw unenhanced scans you can use an appropriate {{PD-old}} tag instead. For usage, see Commons:When to use the PD-scan tag.

Note: This tag applies to scans and photocopies only. For photographs of public domain originals taken from afar, {{PD-Art}} may be applicable. See Commons:When to use the PD-Art tag.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current08:06, 23 August 2022Thumbnail for version as of 08:06, 23 August 20221,550 × 2,239, 68 pages (1.99 MB)PencakeBot (talk | contribs)Upload 航空委員會航空研究所技術報告,又名,航空委員會航空研究院研究報告 1946年28期 (21/22) by 航空委員會航空研究所 (batch task; nlc:data_404,01J002447,59585; 民國期刊.8; 航空委員會航空研究所技術報告,又名,航空委員會航空研究院研究報告)

You cannot overwrite this file.

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:NLC404-01J002447-59585_航空委員會航空研究所技術報告,又名,航空委員會航空研究院研究報告_1946年28期.pdf&oldid=703571387"