Assessment of Vibration Injury to Bartlett Pears

Abstract

Laboratory tests revealed that palletized fiberboard boxes of Bartlett pears are most susceptible to bruising damage at vibrational frequencies below 40 Hz (cycles/s), which are common in refrigerated highway trailers. Damage studies indicate that of the four frequency regions observed in-transit (3,5 Hz, 9 Hz, 18,5 Hz, and 25 Hz), Bartlett pears are most severely damaged at 3,5 Hz and 18,5 Hz. Laboratory studies also show that fiberboard boxes of pears amplify vibration at frequencies below 40 Hz such that, for some frequencies, the lid of the top box in a pallet is accelerated three to four times more than the level input to the bottom box. Keywords.

Vibration and Shock Analysis of Fruit and Vegetables Transport-Cherry Transport from Yamagata to Taipei-

“…Fruit must thus be packaged in cushioning sufficient to protect it from vibration and shock. This is especially true of perishable fruit and vegetables such as pears 2,11,12,16,17 , loquats 1 , peaches 15 , potatoes 13 , tangerines 7 , and oranges 10 . Domestic fruit is mainly transported by truck using many types of containers, including corrugated fiberboard containers and cushioning materials.…”

Assessment of the quality losses of fresh fig fruits during transportation

“…These PSD peak results were confirmed by Pierce et al (1992). On the other hand, Slaughter et al (1993) and Barchi et al (2002) Slaughter et al 1993Slaughter et al , 1997. Visually inspected quality attributes of fresh fig fruits and their scores were given in Table 3.…”

“…Damaged fruits exposed to attack of the virus and loss their quality. The fruit injury due to vertical vibration is related to the transportation characteristics of vehicles, the conditions of the roads and boxes (Slaughter et al 1993(Slaughter et al , 1998Sommer 1957).…”

Development of Vibration Absorption Device for the Transportation-Trailer System (IV) - Connecting Hitch, Leaf Spring and Shock Absorber Suspension -

“…(Petter et al, 1998;Siomos et al, 1995;Slaughter et al, 1993). (Hong et al, 2005(Hong et al, , 2008Lee et al, 2003;Petter et al, 1998;Siomos et al, 1995;Hinsch et al, 1993;Slaughter et al, 1993;Wright et al, 1968). …”