{"id":232,"date":"2020-04-15T19:31:34","date_gmt":"2020-04-15T23:31:34","guid":{"rendered":"https:\/\/commons.princeton.edu\/60-2-tiger-cub\/?p=232"},"modified":"2020-04-15T19:31:34","modified_gmt":"2020-04-15T23:31:34","slug":"week-10-april-15th-scribe-notes","status":"publish","type":"post","link":"https:\/\/commons.princeton.edu\/60-2-tiger-cub\/2020\/04\/15\/week-10-april-15th-scribe-notes\/","title":{"rendered":"Week 10 April 15th Scribe Notes"},"content":{"rendered":"<h5>Updates<\/h5>\n<ul>\n<li>Guest speaker Bill Becker will present on wheels on Monday, April 20th<\/li>\n<li>Wednesday, April 22nd we will &#8220;Show and Tell&#8221; home projects<\/li>\n<li>Fusion360: work on drawing motorcycle parts for final project<\/li>\n<\/ul>\n<h5>Today: Guest Lecture by Professor Arnold on Material Science<\/h5>\n<p>Professor Arnold spoke to us about the application of materials in context and the importance of carefully thinking about the materials of individual parts.<\/p>\n<ul>\n<li>Carburetor\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li>The goal of a carburetor is to bring together materials that are highly reactive (oxygen and fuel), therefore the material of the carburetor must be able to withstand corrosion.<\/li>\n<li>Made of aluminum and brass<\/li>\n<li>Materials change over time, so using two different materials has its advantages in acting as a preventative measure against corrosion.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>Frame\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li>Braise vs Weld\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li>braising: uses multiple kinds of materials; only on surface of material<\/li>\n<li>welding: melting metals together; penetrates into the material<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>Why use a hollow tube for the frame rather than a solid or alternative shape?\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li>the tube has the same necessary mechanical properties, and reduces weight and cost<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>Brakes\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li>want a material for the brake pads that provides lots of friction, but won&#8217;t melt<\/li>\n<li>solution: composite of ceramics and metals\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li>ceramics provide the heat resistance but are brittle<\/li>\n<li>metals provide the ductility<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>Example of carbon brake pad material:\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li>Phenol resin (thermoset polymer), steel (ductility &amp; even heat distribution), graphite (carbon-high temperature material), cashew (organic material-carbon)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>Polymers\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li>molecule (monomer) that repeats lots of times<\/li>\n<li>properties can range from soft and squishy to hard and brittle<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>Epoxy\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li>polymers that are very hard<\/li>\n<li>thermoset polymer (when it reaches high temperatures it will not melt but will turn into a vapor)<\/li>\n<li>In practice, two components are mixed together to form the epoxy. This is an exothermic process that forms a crosslink between the molecules.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>Forged vs Drop Forged\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li>changing a metals shape (by hitting, stretching, etc.) makes it harder, but the trade off is that it becomes more brittle<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5>Chapter 4 Discussion<\/h5>\n<ul>\n<li>Discussion leader: Jen<\/li>\n<li>Motorcycle references on pgs. 88, 89, and 94\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li>Pneumatic die grinder-air tools; gentle &amp; high speed; commonly used for m\/c<\/li>\n<li>crank 69mm stroke; pistons to fit an 87mm bore; double-barrel carburetor; free-flow exhaust (less back pressure &amp; higher power); centrifugal advanced distributor; remote oil cooler and full-flow filter; lightened flywheel; heavy clutch (heavier clutch = tighter spring = harder push on clutch)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>Plywood vs solid wood (in reference to rosewood plywood)\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li>Rupert: rosewood plywood is plywood with a rosewood veneer on top<\/li>\n<li>plywood is not as sensitive to humidity changes as solid wood is<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>Cecilia: connection to\u00a0<i>Zen and the Art of Motorcycle\u00a0Maintenance;\u00a0<\/i>understanding the history of the machine through its physical alterations<\/li>\n<li>Careful vs Commanding\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li>idea presented by book: figuring out where you fit within these two categories and choosing a profession that matches those tendencies<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>Anna: discussion of Aristotle&#8217;s definitions of art-those that &#8220;reliably attain their object&#8221;(like building) and those that are &#8220;stochastic&#8221; (medicine) (pg81)<\/li>\n<li>Betty Edwards and D<em>rawing on the Right Side of the Brain<\/em><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Updates Guest speaker Bill Becker will present on wheels on Monday, April 20th Wednesday, April 22nd we will &#8220;Show and Tell&#8221; home projects Fusion360: work on drawing motorcycle parts for final project Today: Guest Lecture by Professor Arnold on Material Science Professor Arnold spoke to us about the application of materials in context and the &hellip; <a href=\"https:\/\/commons.princeton.edu\/60-2-tiger-cub\/2020\/04\/15\/week-10-april-15th-scribe-notes\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Week 10 April 15th Scribe Notes&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1838,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-232","post","type-post","status-publish","format-standard","hentry","category-notes"],"_links":{"self":[{"href":"https:\/\/commons.princeton.edu\/60-2-tiger-cub\/wp-json\/wp\/v2\/posts\/232","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/commons.princeton.edu\/60-2-tiger-cub\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/commons.princeton.edu\/60-2-tiger-cub\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/commons.princeton.edu\/60-2-tiger-cub\/wp-json\/wp\/v2\/users\/1838"}],"replies":[{"embeddable":true,"href":"https:\/\/commons.princeton.edu\/60-2-tiger-cub\/wp-json\/wp\/v2\/comments?post=232"}],"version-history":[{"count":1,"href":"https:\/\/commons.princeton.edu\/60-2-tiger-cub\/wp-json\/wp\/v2\/posts\/232\/revisions"}],"predecessor-version":[{"id":233,"href":"https:\/\/commons.princeton.edu\/60-2-tiger-cub\/wp-json\/wp\/v2\/posts\/232\/revisions\/233"}],"wp:attachment":[{"href":"https:\/\/commons.princeton.edu\/60-2-tiger-cub\/wp-json\/wp\/v2\/media?parent=232"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/commons.princeton.edu\/60-2-tiger-cub\/wp-json\/wp\/v2\/categories?post=232"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/commons.princeton.edu\/60-2-tiger-cub\/wp-json\/wp\/v2\/tags?post=232"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}