Which mechanism caused early cast-iron Chinese cannons to sometimes shatter catastrophically?

💡 Explanation

Early casting techniques often resulted in slag Inclusion, creating stress points. This inclusion concentrates stress under pressure, resulting in fracture rather than uniform expansion of ductile alloys because the inhomogeneous nature hinders even load distribution.

• Which mechanical failure affected John Smeaton's Eddystone Lighthouse (1759) during its operational lifespan?
• Which navigational error increases if an astrolabe's alidade offset isn't algebraically accounted for when determining angles relative to true zenith?
• Which outcome accelerates deterioration when moisture penetrates pietra dura inlay?
• Which outcome increased the risk for Inca stone arch construction?
• Which consequence results from the lack of ongoing terrace maintenance employed pre-columbian times?
• Which resource limitation primarily constrained the expansion of pre-Columbian chinampa agriculture around Lake Texcoco?