The most recent SCOSS and CROSS newsletter has a headline that is a slap in the face, and almost certainly a deserved one. Report number 858 is “Repeating the same mistakes” and it describes areas where engineers are literally dong that. The whole purpose of forensic investigations, from the engineers’ perspective, is to understand what …

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Strain Compatibility Visualized

Some engineering concepts are easy to explain. For example, the idea that stress and strain are related can also be expressed, crudely, as objects squash when you push on them. Everyone understands that on an intuitive level. Other concepts, like strain compatibility, are a little more difficult. The short version of strain compatibility, if I …

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