PSI - Issue 47

Saud Alsaghir et al. / Procedia Structural Integrity 47 (2023) 437–447 Saud Alsaghir/ Structural Integrity Procedia 00 (2023) 000 – 000

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Figure 5. Wear volume of P110, and L80 samples test at rotational motion of 115 rpm only, and two varying loads (1400N and 1000N) for 90 mins under oil-based condition, and sm2535-110 sample test at rotational motion of 115 rpm only, and two varying loads (1400N and 1000N) for 60 mins under oil-based condition. 4.3. Casing wear factor The casing wear factor (K) in MPa -1 is calculated using the following common formula. = (2) Where: tĞĂƌ ǀŽůƵŵĞ͕ ŵŵ ϯ ^ŝĚĞ ůŽĂĚ͕ E ^ůŝĚŝŶŐ ĚŝƐƚĂŶĐĞ͕ ; × × × ) + ( × ) ͕ ŵŵ dŽŽů ũŽŝŶƚ ĚŝĂŵĞƚĞƌ͕ ŵŵ ZŽƚĂƚŝŽŶĂů ƐƉĞĞĚ͕ ƌƉŵ tĞĂƌ ƚĞƐƚ ĚƵƌĂƚŝŽŶ͕ ŵŝŶ ^ůŝĚŝŶŐ ŵŽƚŝŽŶ͕ ŵŵͬ ŵŝŶ The measured wear factors for the three materials under varying loads and sliding motion are illustrated in Table (4). Figure (6) shows the calculated wear factor of the three materials under constant rotational speed (115 rpm), sliding motion (2.5 mm/s), and varying load (1400N and 1000N). It can be observed that as the side load increases, the wear factor increases. P110 steel has less wear factor values than L80 and sm2535. Under rotational speed (115 rpm) only and varying load (1400N and 1000N) as illustrated in Figure (7), increasing the side load will also increase the wear factor for all three materials.